lonal Bureau of Stan&ar*!

Library, ».*. Bldg

FEB 17 1960

PB 151392

^ecknlcai v(©te 33

DISTRIBUTION OF INCOMING LETTERMAIL

AT THE

BALTIMORE, MARYLAND CITY POST OFFICE

U. S. DEPARTMENT OF COMMERCE

NATIONAL BUREAU OF STANDARDS
THE NATIONAL BUREAU OF STANDARDS

Functions and Activities

The functions of the National Bureau of Standards are set forth in the Act of Congress, March.

3, 1901, as amended by Congress in Public Law 619, 1950. These include the development and

maintenance of the national standards of measurement and the provision of means and methods for making measurements consistent with these standards; the determination of physical constants and

properties of materials; the development of methods and instruments for testing materials, devices,

and structures; advisory services to government agencies on scientific and technical problems; in- vention and development of devices to serve special needs of the Government; and the development

of standard practices, codes, and specifications. The work includes basic and applied research,

development, engineering, instrumentation, testing, evaluation, calibration services, and various

consultation and information services. Research projects are also performed for other government

agencies when the work relates to and supplements the basic program of the Bureau or when the Bureau's unique competence is required. The scope of activities is suggested by the listing of

divisions and sections on the inside of the back cover.

Publications

The results of the Bureau's work take the form of either actual equipment and devices or published papers. These papers appear either in the Bureau's own series of publications or in the journals

of professional and scientific societies. The Bureau itself publishes three periodicals available from

the Government Printing Office: The Journal of Research, published in four separate sections,

presents complete scientific and technical papers; the Technical News Bulletin presents summary

and preliminary reports on work in progress; and Basic Radio Propagation Predictions provides

data for determining the best frequencies to use for radio communications throughout the world.

There are also five series of nonperiodical publications: Monographs, Applied Mathematics Series,

Handbooks, Miscellaneous Publications, and Technical Notes. Information on the Bureau's publications can be found in NBS Circular 460, Publications of the

National Bureau of Standards ($1.25) and its Supplement ($1.50), available from the Superintendent

of Documents, Government Printing Office, Washington 25, D.C.
NATIONAL BUREAU OF STANDARDS

technical Ntote

33

OCTOBER 1959

DISTRIBUTION OF INCOMING LETTERMAIL

AT THE

BALTIMORE, MARYLAND CITY POST OFFICE

Bernard M. Levin and Arthur E. Newman

NBS Technical Notes are designed to supplement the Bureau's regular publications program. They provide a means for making available scientific data that are of transient or limited interest. Technical Notes may be

listed or referred to in the open literature. They are for sale by the Office of Technical Services, U. S. Department of Commerce, Washington 25, D. C.

DISTRIBUTED BY

UNITED STATES DEPARTMENT OF COMMERCE

OFFICE OF TECHNICAL SERVICES

WASHINGTON 25, D. C.

Price $2.50

FOREWORD

The Chain Ratio method of sampling for determining the

distribution of mail by destination was developed as a result of the

great need of the Post Office Department and National Bureau of

Standards to have an accurate yet reasonably inexpensive and

practical method for acquiring such data. Heretofore, complete

enumerations were made whenever destination data have been

desired. The Chain Ratio method was developed and first applied

to Outgoing mail in the Baltimore City Post Office. Subsequent

applications were made in the Los Angeles, San Francisco, and

Washington, D. C. , Outgoing Mails Division. The method was

utilized to study Incoming distribution in the Washington, D. C.

post office. This report presents the results of a study of the

Incoming Mail in Baltimore, Maryland.

S. N. Alexander, Chief

Data Processing Systems Division

-l-
ACKNOWLEDGMENT

The authors wish to express their appreciation to Mr. E. Cohen,

Chief Accountant, Baltimore City Post Office, for providing the

coordination necessary for the successful completion of the study;

to Mrs. Jeanne Auber, Section 12. 5, NBS, for performing the

necessary hand calculations and for efficiently preparing the data for

machine computation and tabulation; and to Mr. K. C. Nelson,

Section 11. 02, NBS, for his suggestions and supervision of the

machine computations and tabulations. Particular gratitude is

expressed for the assistance, cooperation, and guidance provided by

Mr. Bernard A Goldbloom, Cost Analysis Section, Baltimore City

Post Office, in supervising the collection of data involved in the

conduct of the study. Finally, gratitude is expressed to the Postmaster

and staff of the Baltimore City Post Office for their cordial

cooperation.

-li-
TABLE OF CONTENTS

Page

FOREWORD i ACKNOWLEDGMENT ii

1. INTRODUCTION 1

2. PROCEDURE . 1

2. 1 Chain Ratio Method 1 2. 2 Definitions 2

2. 3 The Model 3

2.4 Types of Mail Studied 3

2. 5 Volume Count Data 5

2. 6 The Sampling 5

2. 7 Special Problems in the Sampling of Third Class

Mail 5

2. 8 Analysis of the Data 6

3. RESULTS 6

4. DISCUSSION OF RESULTS 16

4. 1 The Chain Ratio Method 16

4. 2 Discussion of the Cumulative Percentages .... 16

4. 3 Estimation of Chain Ratio Values by Equation ... 16

4. 4 Comparison of First and Third Class Mail .... 18

4. 5 General Observations 18

5. SUMMARY 18

References 21

Appendices 23

A. Percentages of the Total Volume, Destinations

Listed by Case 23

B. Tabulation of Estimated Percentages of the

Total Volume to Each Destination for

Baltimore Incoming, First Class Mail. „ . . 59

C. Tabulation of Estimated Percentages of the

Total Incoming Third Class Mail 67

D. Tabulation of Estimated Percentages of the

Total Volume to Each Destination for Baltimore

Incoming Combined First and Third Class Mail . 75

E. Tabulation of Estimated Percentages of the Total

Volume to Each Firm Direct for Baltimore

Incoming First Class Mail 83

F. Tabulation of Estimated Percentages of the Total

Volume to Each Firm Direct for Baltimore

Incoming Third Class Mail _. . . . 94

-iii-
TABLE OF CONTENTS (Continued)

Page

G. Tabulation of Estimated Percentages of the

Total Volume to Each Destination for

Baltimore Incoming First and Third Class

Combined Mail 104

-iv
LIST OF FIGURES

Figure Page

Numbe r

1 Flowchart Model for the Distribution of

Incoming Mail 4

2 Distribution of Incoming First Class Letter

Mail at the Baltimore, Md. City Post Office . 13

3 Distribution of Incoming Third Class Letter

Mail at the Baltimore, Md. City Post Office . 14

4 Distribution of Incoming First and Third Class

Letter Mail at the Baltimore, Md. City Post

Office 15

5 Graph of Cumulative Percentages of Incoming

Letter Mail at the Baltimore, Md. City Post

Office 17

6 Graph of Individual Incoming Destination

Percentages at the Baltimore, Md. City Post

Office 19

-v-
LIST OF TABLES

< Table

Number Page

1 Tabulation of Incoming Volume Count Data for

Baltimore, Md. City Post Office for the 5 -Day

Test Period Beginning October 13, 1958 -- Input 7

2 Distribution of Incoming First Class Letter Mail

at the Baltimore, Md. City Post Office -- Output. 8

3 Distribution of Incoming Third Class Letter Mail

at the Baltimore, Md. City Post Office -- Output. 9

4 Distribution of Incoming First and Third Class

Letter Mail at the Baltimore, Md. City Post

Office -- Output 10

5 Summary Tabulation of Incoming Letter Mail at

the Baltimore, Md. City Post Office -- Output . 11

6 Tabulation of Estimated Percentages of the

Total Volume of Incoming First and Third Class

Letter Mail to Each Destination for Baltimore -- Selected Destinations 12

-VI'
Distribution of Incoming Lettermail at the

Baltimore, Md. City Post Office

Bernard M. Levin and Arthur E. Newman

Lettermail at the Baltimore, Md. post

office was sampled and studied for the purpose

of estimating the distribution characteristics

of letters for local delivery. Separate studies

were conducted for first- and third-class mail

and the results are reported both separately

and combined. The study demonstrated an

effective method of sampling incoming letter

mail. It also yielded data needed for the design

of efficient procedures for sorting mail using

machinery now being developed.

1. Introduction

The National Bureau of Standards is developing systems for

letter sorting by automation in Post Offices. In order to develop

systems, it was necessary to obtain much detailed information

concerning the nature and distribution of mail. Some of the desired

types of data are not normally collected by the Post Office for its

own purposes. It was, therefore, necessary to conduct several

special studies inside post offices to collect such data. This paper

is a report of one such study.

The study reported here was a sampling study of Baltimore,

Maryland Incoming mail conducted for the purpose of determining

the distribution of mail by destination. Separate detailed studies

were made of First and Third Class letter mail during the weeks

of October 13, 1958 and October 27, 1958, respectively.

The results of the study are presented in Section 3. Table 1 in the Appendix contains a list of all final sorts with the percentage

of mail going to those sorts according to the sampling study.

Summary graphs are also pres ented.

2. Procedure

2. 1 Chain Ratio Method

The sampling procedure used in this study was the Chain Ratio

Method developed by Severo and Newman (1).

-1-
2. 2 Definitions

A list of definitions of terms, as used in this report, is given

here for reference.!/ These definitions are given in order to avoid

misinterpretation and ambiguity because of postal language

differences among post offices.

1. Separation. - A Separation is a classification characterized

by a labeled pigeon-hole on a sorting case.

2. Destination. - A Destination for a given post office is a final

Separation made at that post office. All directs, residues, and

carrier routes are included in this classification. Nixies, Go-backs,

Skips and Holdouts are also considered Destinations in this study.

3. Firm Direct. - Any firm, organization or group of Post

Office boxes for which a final sort is normally made for letter -size

mail on a sorting case is considered to be a Firm Direct in this study.

Sorts to firms made while ordering a carrier's route (i.e. , the

carrier walk sort) are not included.

4. Distribution. - A Distribution is the function of physically

sorting letters into their respective separation boxes.

5. Primary. - The Primary (often referred to as City Primary)

is the first stage of Distribution of incoming mail.

6. Secondary. - The Secondary (often referred to as Station), is

the second stage of Distribution of incoming mail. Secondary mail has

not been distributed to a final Destination in the Primary.

7. Tertiary. - The Tertiary is the third stage of Distribution of

incoming mail. Tertiary mail has not been distributed to a final

Destination in the Secondary.

8. By-pass mail. - By-pass Mail is mail which receives its

first Distribution in the Secondary or which arrives in the Incoming

section tied out to a direct off the Primary.

9. Total Volume. - Total Volume refers to the defined classes of

mail studied. (Total volume is defined more explicitly as used in this

study in Section 2.4.)

10. Holdout Mail. - A Holdout separation box may be used for any

Destination which temporarily receives a large quantity of mail and

does not occupy a designated Separation box on the case.

11. Transit Mail. - Transit Mail i s any mail that does not

originate in the city post office area and that is transported to the

l/ Terms not defined in this section are used as given in the

Postal Term Glossary (2).

-2-
incoming section for local delivery. Transit mail may be received

from Trains, H. P.O. 's, Star routes, or Air mail fields.

12. Unknown. - The section of the Post Office that does the

Primary sorting of all incoming Nixie mail and all previously

misfiled letters is called the Unknown section.

2. 3 The Model

The model of the flow of incoming mail, discussed in this paper,

consists of a three -stage sorting scheme as represented by the flow

diagram given in Figure 1. The Total volume of mail is represented

in the top box and consists of Transit mail and Local originating mail.

The originating mail may be either of two types; Cancel or Non-cancel.

Both Non-cancel and Transit mail may include mail that by-passes

the Incoming Primary. The Primary mail may be sorted to a final

Destination or to a Secondary case. The By-pass mail goes directly to

a Secondary case unless it has already been sorted to a Firm direct

off the Primary before arrival at the Baltimore Post Office. The mail

in the Secondary cases could be sorted either to a final Destination

such as a firm or carrier route, or to a Tertiary case. Tertiary mail

may be sorted to firms or post office boxes.

2.4 Types of Mail Studied

Only First and Third class Incoming lettersize mail was studied.

First class mail included three types of Primary mail, each of

which was sampled separately at the Primary: (1) Transit mail

(including air mail) into the Primary; (2) Local originating cancel

mail into the Primary; and (3) Local originating non-cancel mail into

the Primary. The By-pass mail was of two types: (1) Local

originating non-cancel mail and (2) Transit mail.

Utility bills were excluded from the population of First class mail

being sampled because the distribution characteristics of this mail

varied greatly from day to day in a monthly cycle and the sampling

covered a period of one week. Large special mailings were also to

be excluded but none were noticed.

Third class mail included two types of Primary mail: (1) Transit

mail into the Primary; and (2) Local originating mail into the Primary.

The By-pass mail was also of two types: (1) Transit mail into the

Secondary; and (2) Local originating mail into the Secondary.

Large political mailings were excluded from the population of

Third class mail because such mailings occur largely during one

week of each year, the week that the Third class mail was sampled.

Other types of large special mailings were included.

-3-
TOTAL VOLUME

PRIMARY

1

BY -PASS

DESTINATIONS

Y T

SECONDARY

DESTINATIONS

TERTIARY

DESTINATIONS

Figure 1. Flow Chart Model for the Distribution of Incoming Mail

4-
2. 5 Volume Count Data

Volume counts regularly made by the Work Performance

Standards group at the Baltimore City Post Office were used to

determine the Total volume flowing into the Primary and Secondary.

Special volume counts were made of the By-pass mail. These counts

were made on five days: October 13 - 17, 1958 for the 24-hour

period of each day. The counts were made separately but

simultaneously for First and Third class mails. A special volume

count was made during the week of October 27 - 31, for the purpose

of breaking down the Third class Primary mail into Local originating

and Transit mail.

2. 6 The Sampling

In sampling studies of Outgoing mail, most of the samples were

chosen by randomly selecting trays of mail, each tray containing two

feet of mail. This tray was usually selected by virtue of its being the

first tray to pass a given point after a randomly selected time. In

the selection of Non-cancel mail a different procedure was used. In

general, this sampling was done by choosing X letters (e.g. , three)

every Y inches (e. g. , two) of mail. This would be done for all such

mail passing a given point after a selected time until two feet of mail

was collected. This was done because Non-cancel mail is not mixed

before sorting as Cancel mail is.

The procedures for selecting samples of First class Incoming

mail were the same as those for First class Outgoing. Local

originating Non-cancel Primary mail was selected using the rule of

three letters every two inches.

All Third class Primary mail was selected using the rule of

three letters every two inches. The same rule was set up for By-pass

mail for special large mailings but no such mail appeared during the

sampling periods.

2. 7 Special Problems in the Sampling of Third Class Mail

i The Chain Ratio Me thod was constructed so that the normal flow

of mail would not be delayed and so that the normal work of

experienced distribution clerks could be utilized. This meant that the

sampling had to be integrated into a dynamic system. The dynamic

system was predictable for First class mail; for example, every weekday night would be a rush period. On the other hand, the Third class

system was relatively less predictable because it only became active

when work on First class mail was nearing completion. For example,

if the First class mail was light, the Third class mail would be sorted

in the afternoon. On the other hand, if the mail was heavy, little work

would be done on Third class mail in the afternoon. The one time

period when one could be assured of finding Third class mail being

sorted was at the beginning of the second tour; i. e. , about 7:00 -- 8:00

a.m. Therefore, most of the Secondary samples were selected at that

time

-5-
2. 8 Analysis of the Data

Since this was a Chain Ratio study, the computations involved

were essentially the multiplication of chains of ratios. Punch card

equipment was used to do many of the routine computations.

A separate analysis was made of the data for First class mail.

In this analysis three types of mail were independently sampled at

the Primary: (1) Transit mail; (2) Local originating cancel mail;

and (3) Local originating non-cancel mail. The first ratio in each

of the chains was obtained by combining the results of the three

independent samples and the results of volume counts of By-pass

mail.

A separate analysis was made of the data for Third class mail.

In this analysis no distinction was made between the different types

of Primary mail. (An attempt was made, of course, to have all types

of mail properly represented in the sample.)

The results of the two analyses were combined. This was done

essentially by finding weighted averages of the results of the two

analyses using weights of . 67 for First class mail and . 33 for Third

class mail. To minimize rounding errors, the final computing steps

of this analysis were done independently of the two previous analyses.

3. Results

The total volume figures and the corresponding percentages are

summarized in Tables 1-5; they may be used by the reader to

convert the reported percentage figures of mail to pieces. The flow

charts given in Figures 2, 3 and 4 contain the basic percentages of

the Total Volume of mail to each stage of distribution.

Appendix A presents the percentages of the Total Volume of mail

to each destination by Case for First class, Third class and combined

percentages. Numbers appearing alone in the destination column refer

to carrier numbers.

Tabulations of the estimated percentages of the Total Volume of

mail going to each Destination given in rank order are presented in

Appendices B-D. Appendix B presents the results for First class

mail; Appendix C, Third class; and Appendix D, the combined results.

In each case the largest 200 are identified by name, the remainder by

percentage category. A selected portion of the combined results are

presented in Table 6. Note that the ordering of the cities in each

table depends only on the data presented in that table, i.e., the

ordering is different in each table. Figure 5 graphically portrays the

cumulative percentages of the mail destined for the 200 Destinations

receiving the greatest volumes of mail as indicated in the three tables.

Appendices E-G present the percentages of the Total Volume of

mail to each Firm Direct in the order of descending value. Appendix

-6-
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dw

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m o o O O 00 o •—t !•«- o o • • «. • • • • • CO CO00 vO m oo

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H-» o

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ua

•H

rH Oh

CIO

rHO

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r-H

Cti d

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CCi

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r^

rHnj •ddov

OJ wdo

CO

H-> rHo

rH

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Q)

r-l rH • H _, CD U g

CJ

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rHrt •H

H-> rHCD Hdo

(ft H-» rHO

t/> rHad

CO 3

15 o

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-11-
Table 6

Tabulation of Estimated Percentages

of the Total Volume of Incoming First and Third Class Letter Mail

To Each Destination for Baltimore

Selected Destinations

Cumulative

Rank Firm Direct or Carrier Number Percentage Percentage

1. Dept. of Health, Education & Welfares 1.285 1.285

2. Montgomery Ward 32 . 734 2.019

3. Gas & Electric Company . 473 2.492

4. American Oil Company (Box 1956) .451 2.943

5. Johns Hopkins University (Zone 18) . 324 3.267

10. 251 . 192 4.346

15. The Martin Company . 171 5.255

20. 245 . 160 6.073

30. 120 . 149 7.619

50. 1108 . 128 10.346

80. 1802 . 117 14.010

100. Commissioner of Motor Vehicles . 114 16. 314

150. 2517 . 106 21. 789

200. 211 .098 26.878

300. 133 .089 36.234

500. 1201 . 077 52.895

1000. McCormick Company .042 84. 359

1403. W. H. Cole & Sons .000 90. 694

-12
TOTAL VOLUME

13.64 86.36

BY- PASS

r

PRIMARY

.227*

[13.42

FIRM

DIRECTS

MISC.

FIRM

DIRECTS

CARRIERS

TERTIARY

FIRM

DIREC 2.46 .20 MISC.

~2 OBTAINED FROM VOLUME COUNTS

Q OBTAINED FROM SAMPLE DATA

Figure 2. Flow Chart of Distribution of First Class Incoming Mail at the

Baltimore City Post Office

-13-
19.51

I

BY-PASS

19.51

TOTAL VOLUME

80.49

I

PRIMARY

PRIMARY

DIRECTS

MISC.

SECONDARY

n.^

msm—*• CARRIERS

5.12 MISC.

TERTIARY

FIRM

DIRE .755 \00 MISC.

Q OBTAINED FROM VOLUME COUNTS

Q OBTAINED FROM SAMPLE DATA

Figure 3. Flow Chart of Distribution of Third Class Incoming Mail at the

Baltimore City Post Office

-14-
TOTAL VOLUME

[15.58 84.42

BY-PASS

I

PRIMARY

Ji^p-^H

SECONDARY

FIRM

DRECTS -0-1©

7281 CARRIERS

5.36 MISC

TERTIARY

FIRM

DIRECT ISO .13 MISC.

| OBTAINED FROM VOLUME COUNTS

Q OBTAINED FROM SAMPLE DATA

Figure 4. Flow Chart of Distribution of Combined First and Third Classes

Incoming Mail at the Baltimore City Post Office

-15-
E presents the results for First class mail; Appendix F, Third

class; and Appendix G, the combined results.

4. Discussion

4. 1 The Chain Ratio Method

The statistical Chain Ratio method developed by Severo &nd

Newman (1) was the sampling procedure used in this study. This

method was developed for the purpose of studying the distribution

characteristics of outgoing mail. The method was developed, however,

so that it would be adaptable to the study of Incoming mail.

Subsequently, Newman (3) used the method in a Pilot study of

Washington, D.C. Incoming mail. He included in his population of

mail to be sampled only First class letter -sized mail and he excluded

By-pass mail. Despite these limitations, Newman's study gave

useful results and, thereby, demonstrated that the Chain Ratio Method

could be. used to sample Incoming mail.

4. 2 Discussion of the Cumulative Percentages

Figure 5 and Appendices B, C and D show the percentage of noail

going to the largest N Destinations for any N from 1 to 200 for First

class, Third class, and the First and Third class combination

respectively. They do not include the percentage of mail entering the

Primary that could be sorted to the largest N final sorts if the

Primary had an unlimited number of pigeon holes. If this were done,

certain categories of miscellaneous mail would be among the top 200

Destinations. No attempt has been made to indicate the percentage of

mail entering the system that could be sorted to the largest N final

sorts. This is because there are many possible ways of handling

miscellaneous mail. The data, as. presented, can be used as the basis

for finding the percentage of mail sortable to the largest N final sorts

for any proposed method of handling miscellaneous mail.

4. 3 Estimation of Chain Ratio Values by Equation

Figure 6 graphically portrays the percentages of the mail to the

various rank ordered destinations as presented in Tables B, C and D

of the Appendix, using a logarithmic scale for both axes.

Between the 10th and 600th Destinations, each of the curves is

approximated by a separate straight line. By inspection, the equations

of these lines for First class, Third class and combined mail

respectively are

logy = -. 293 log x -. 340,

log y

= -. 230 log x -. 450, and

log y

= -.213 log x -. 519, which can

be rewritten as

-16-
IOO

90 80

70 60

50

40

30

25

20

IS

10

98

76

2.5

1.5

AO

.9

.8

.7

.6

.2

.10

- *1

,

St*s

f

S.'. y

* /# .•s /> * y

* * <

'. • *- . * * S s

* «*

*> •

^ * *

*

s *

i**

s

** * S

, *

s

/

' rm*Jl ot/uj

S

.' r iko i &> i nircu <.i./-uo£.o ^uiviaimcL.)

.' rHIRb CLASS

,'

2 3 4 5 6 789/0 /S 20 2530 40 50 60 70 8090/00 /SO 200 300 400 S00 700 /000 RANK

Figure 5. Graph of Cumulative Percentages of Incoming Letter Mail at the Baltimore, Md. City Post Office

17-
y .457x--293

. 355x

-.213

, RK -.230

y = . 355x and

y = . 303x

In the range between destinations 10 to 600 the most errant value on

a percentage basis is for the 300th destination on the Third class

curve where the equation predicts a value of y = . 096 and the actual

value is y = . 104. Thus, for the range considered the equations

give results which are accurate to within 9% of the chain ratio values.

4. 4 Comparison of First and Third Class Mail

There are two major differences between the distribution

characteristics of First and Third class mail: (1) Volume; and

(2) Ratio of Carrier percentage, to Firm percentage. The Volume of

First Class mail is approximately twice as great as that of Third

class mail. About 25% of the deliverable First class mail goes to

Firm Directs compared to 8 % of the Third class mail.

4. 5 General Observations

It was noticed that very little Third class mail was addressed to

Firm Directs except for firms employing engineers and for hospitals.

A large amount of Third class mail appeared to be addressed to

physicians. It, therefore, follows that a carrier in a business area

would not deliver much Third class mail unless his route included

several engineering firms and/or physicians. This could account for

the wide variations of Third class mail among carriers in business

areas.

In Table 1, Transit mail is not separated into Air mail and Train

mail because Air mail for Baltimore comes primarily from two

sources: (1) Friendship Airport and (2) National Airport in

Washington, D. C. Mail from the latter airport comes by train from

Washington, D. C. and arrives mixed with other train mail.

5. Summary.

This report presents the results of a sampling study done to

determine the distribution of Incoming letter mail at the Baltimore

City Post Office. The study includes both First and Third class

lettermail.

The principal results of this study are summarized below:

1. Baltimore handles about 1, 350, 000 incoming letters per day.

2. About one -third of the incoming letter mail is Third class;

the remainder, First class.

18-
2

/.S

/.00 .9a

.7

.6.s

.4

.32S

.2

.IS

.100 09

.08 .07

.06 .05

.04

.03

.025 02

.015

.OIO .009

.008

.007

.006 :oos

.004

.003

.002

.00/

N. > \

'*... \

*' -»^

> \\ "

\ "»,

* •\ \~

> > . .^N

-»-i -

Z;^ ~==^: —-«

*» • ^ ^^ — *« V 5•

' N1 v

i

\

i \

\

\\

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\ \

• f/«0/ Si IHIHU ClrfJJC.J \.OIv7Cincu \

\

• THIf"~> ft **SH 'J

!

1

RANK

Figure 6. Graph of Individual Incoming Destination Percentages at the Bal&ten)ore,o:Mc.lCay Post Office

-19-
3. About 15% of the mail by-passes the incoming Primary.

4. Approximately 67% of the First class mail and 84% of the

Third class mail is delivered by carriers.

5. About 23% of the First class mail and 7. 5% of the Third

class mail is addressed to Firm Directs.

6. Approximately 2% of the First class mail and-0. 1% of the

Third class mail is rated mail.

7. About 7. 5% of the First class mail and 8. 7% of the Third

class mail needs special handling or is undeliverable.

This includes uncancelled letter s, missorts, nixies and

outgoing letters.

8. • About 57% of the First class mail and 35% of the Third class

mail originated in Baltimore.

-20-
References

1. N. C. Severo and A. E. Newman,

A Statistical Chain-Ratio Method for Estimating relative

"Volumes of Mail to Given Destinations, to be published in

NBS Journal of Research C.

2. Postal Term Glossary, U. S. Post Office Department,

Publication 18, August 1956.

3. A. E. Newman, "Distribution of Incoming First Class

Lettermail at the Washington, D.C. Post Office",

unpublished paper, August 1958.

4. N. C. Severo and A. E. Newman, Distribution of Mail byDestination at the San Francisco, Los Angeles and Baltimore

Post Offices, NBS Technical Note 27, September 1959-

-21-

Destination

APPENDIX A

Percentages of the Total Volume,

Destinations Listed by Case

Percent Percent Percent

First Class Third Class Combined

Rated-Primary 1.048 . 170 .758

Maryland-Primary 1. 592 1.435 1.540

Uncancelled-Primary 0.259 .500 .339

Walbrook 16 2.337 2:750 2.473

Dundalk 22 2. 127 3.991 2.742

Firms A-L Primary 1.011 . 106 .712

Firms M-Z Primary 1.004 .032 .683

Hand Cancel-Primary 0. 166 . 138 . 157

Montgomery Ward 32 1.096 .000 . 734

Hampden 1

1. 698 1. 733 1.719

Druid 17 3. 198 4.052 3.480

Franklin 23 3.002 2.252 2. 755

Brooklyn 25 1.666 1. 495 1.610

Official General Del 33 0.034 .021 .030

Distribution -Primary 0.476 1.010 .652

Gwynn Oak 7 2. 514 3.668 2.895

Govans 12 4. 104 6. 121 4.770

Waverly 18 6.617 6.383 6. 540

West Case 1 7. 332 4.759 6.483

Curtis Bay 26 0.385 . 580 .449

Unknown-Primary 0.365 .361 . 364

Tows on Ruxton 4 3.952 4.504 4. 134

Pikesville 8 1.079 1.804 1.318

Clifton 13 2.735 3. 133 2.866

Sparrows Point 19 0. 724 .912 .786

East Case 2 8.812 4.858 7. 507

Halethorpe 27 0.960 2.438 1.448

Dept Health Education Welfare 1.918 .000 1.285

East End 5 1.890 1.829 1.870

Mount Washington 9 0.801 1.005 .868

Hamilton 14 Parkville 34 3. 392 5.021 3.930

Middle River 20 0.945 1.289 1.059

Boxes 3 7. 757 1.822 5.799

Catonsville 28 1. 756 2.708 2.070

South 30 3.470 3.256 3.399

Raspeburg 6 2. 570 4. 161 3.095

Roland Park 10 1.230 1.853 1.436

Arlington 15 4. 690 6.393 5.252

Essex 21 1.481 2.042 1.666

Highlandtown 24 3.447 4.224 3. 703

Carroll 29 3.016 3.816 3.280

Patterson 31 1.341 1.376 1.353

Total Primary and By- Pass 99.997 100.001 100.000

-23-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

Hpk PI Commr of Mtr Vehls 0.018 .000 .012

102 0.066 .056 .063

103 0. 107 . 135 . 116

104 0.048 .066 .054

University Hospital 0.057 . 157 .090

Maryland General Hospital 0.079 .023 .060

Maryland Unemploymt. Hpk PI 0.068 .000 .046

108 0.048 .034 .043

109 0.070 .094 .078

110 0.094 .072 .087

111 0.072 .049 .064

112 0. 149 .267 . 188

113 0.042 .024 .036

114 0.061 .075 .065

115 0. 046 .059 .050

116 0. 134 .061 . 110

117 0. 114 .076 . 101

118 0.083 .306 . 156

119 0.075 .062 .071

120 0. 110 .226 . 149

121 0.037 .027 .033

123 0. 107 .080 .098

124 0. 116 . 123 . 118

125 0. 101 . 130 . Ill

126 0.081 .059 .074

127 0. 142 . Ill . 132

128 0.085 .063 .078

129 0. 116 .077 . 103

130 0.057 .039 .051

131 0.051 .061 .055

132 0. 129 .083 . 114

133 0.081 . 105 .089

134 0. 107 .051 .088

135 0.094 .027 .072

136 0.097 .042 .079

137 0.068 .052 .063

138 0.063 .054 .060

139 0. 114 .053 .094

140 0. 184 .058 . 142

141 0. 132 .062 . 109

Maryland Hospital Service 0.000 .003 .001

143 0. 123 .070 . 106

144 0. 145 .082 . 124

145 0. 154 .047 . 119

146 0. 103 .042 .083

147 0. 125 .089 . 113

-24-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

148 0. 171 .066 . 136

150 0.075 .075 .075

151 0. 125 .076 . 109

152 0. 107 .077 .097

153 0. 121 .072 . 105

154 0. 114 .058 .096

155 0.092 .076 .087

157 0. 092 .096 .093

158 0. 116 .087 . 106

Rated (Zone 1) 0.327 .000 .219

Primary Unknown (Zone 1) 0.202 . 107 . 171

East Case (Zone 1) 0.072 . 105 .083

Boxes (Zone 1) 0. 140 .052 . Ill

May Co 0. 103 .014 .074

Hochs child Kohn Co. 0.053 .018 .042

Hutzler Co. 0.075 .030 .061

B and O (Zone 1) 0. 178 .033 . 130

Firms A-L.- (Zone 1) 0.285 .037 .203

Firms M-Z-(Zone 1) 0. 142 .025 . 103

Unemployment Comp Libty St 0. 164 .001 ,110

Blue Cross 0. 173 .000 ,116

142 0.092 .066 .083

156 0.048 .058 .051

163 0. 112 .000 .075

Total to Zone 1 7. 332 4.761 6.484

201 0.073 .070 .072

202 0.053 . 112 .073

203 0. 107 . 137 . 117

204 0.060 . 112 .077

205 0. 118 .088 . 108

Veterans Admin. (Zone 2) 0.024 .002 .017

Official (Zone 2) 0.007 .001 .005

208 0.227 .044 . 166

209 0.064 .050 .060

210 0. 180 .233 . 197

211 0.073 . 150 .098

212 0. 127 . 112 . 122

213 0.087 .050 .074

214 0.053 .071 .059

215 0.089 .055 .078

216 0.078 .084 .080

217 0. 124 .094 . 114

218 0.067 .060 .064

219 0.024 .075 .041

-25-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class :

0.031

rhird Class Combined

220 .056 .039

221 0.051 .056 .053

222 0.053 .073 .060

223 0.016 .046 .026

224 0.051 . 112 .071

225 0.056 .047 .053

226 0.064 . 107 .078

227 0.087 .073 .082

228 0.078 .040 .065

229 0. 100 .047 .083

230 0. 122 . 100 . 115

231 0. 100 . 135 . 112

232 0. 124 .074 . 108

233 0. 118 .103 . 113

234 0. 102 .063 .089

235 0. 133 .044 . 104

236 0.058 .036 .051

237 0. 109 .097 . 105

238 0.087 .049 .074

239 0.098 .082 .092

240 0. 122 .060 . 102

241 0.215 . 134 . 189

242 0. Ill .038 .087

243 0. 169 .070 . 136

244 0. 140 .088 . 123

245 0. 184 . Ill . 160

246 0.095 .096 .096

247 0. 100 .070 .090

248 0. 184 .092 . 154

249 0. 104 .037 .082

250 0. 131 .073 . 112

251 0.238 .098 . 192

252 0. 167 . 133 . 156

West Case (Zone 2) 0.089 .087 .088

254 0. 164 . 034 . 121

255 0. 149 .068 . 122

256 0. Ill .028 .084

Monumental Life Ins. Co. 0. 104 .002 .071

258 0.084 .046 .072

259 0. 113 .062 .096

Primary Unknown (Zone 2) 0.231 . 113 . 192

Boxes (Zone 2) 0. 295 .095 .229

262 0. 149 .076 . 125

263 0.091 .041 .074

State Tax 0.033 .000 .022

C and P Tele Co 5 Light St -2 0. 100 .001 .067

Rated (Zone 2) 0.229 .005 . 155

Internal Revenue 0.229 .000 . 153

-26-
APPENDIX A (Continued)

Destination

Firms A-L (Zone 2)

Firms M-Z (Zone 2)

Social Security

Total to Zone 2

Afro American

Westinghouse Frdshp Airport

American Stores

Koppers Co.

Emerson Hotel

Butler Bros

A and P Tea Co.

L. A. Benson

Cary Machinery Co.

Dunn and Bradstreet

Section 1 1-148

Section 2 151-298

Section 3 301-448

Section 4 451-598

English-American Tailors

Equitable Trust Co.

Federal Reserve Bank

Section 5 601-778

Section 6 781-928

Section 7 931-1078

Section 8 1081-1228

Fidelity and Deposit Co.

Fidelity Balto National Bank

First Natl Bank

Section 9 1231-1378

Section 10 1381-1491

Section 12 1501-1617

Section 13 1621-1717

General Electric Supply Co.

International Harvester Co.

News -Post Contest

Section 14 1735-1817

Section 15 1835-1917

Section 16 1935-2017

Section 17 2035-2137

Lord Baltimore Hotel

Mercantile Trust Co.

Charles Antel

Gas and Electric Co.

Sunpapers

Maryland Casuality Co.

Percent Percent Percent

First Class Third Class Combined

0. 646 .029 .443

0. 642 .029 .440

0. 120 .000 .080

8.812 4.856 7. 508

0.008 .007 .007

0.073 . 148 .098

0.067 .004 .047

0.031 .058 .040

0.025 .009 .020

0.013 .004 .010

0.023 .010 .019

0.046 .001 .031

0.037 .005 .026

0.040 .000 .027

0. 141 .031 . 104

0.077 .028 .061

0.079 .035 .064

0. 158 . 107 . 141

0.015 .004 .012

0. 152 .017 . 108

0.035 .003 .024

0.071 .037 .060

0. 125 .058 . 103

0. 127 .040 .098

0. 112 .024 .083

0.042 .016 .034

0. 108 .037 .084

0. 133 .009 .092

0. 185 .014 . 129

0.256 .074 . 196

0. 164 .020 . 116

0. 193 .076 . 154

0.037 .004 .026

0.025 .001 .017

0. 183 .000 . 123

0.081 .037 .066

0. 125 .017 .090

0. 116 .063 .098

0.079 .039 .066

0.015 .014 .015

0.046 .006 .033

0.021 .004 .016

0. 672 .067 ,473

0.225 .054 . 169

0.052 .019 .041

-27-
APPENDIX A (Continued)

Percent Percent Percent

Destination Fi rst Class Third Class Combined

Union Trust. Co. 0. 152 .015 . 107

Md. Trust Co. 0.091 .011 .064

Hochschild Kohn Co. 0. 173 .000 . 116

General Motors Acceptance CorpO. 065 .000 .044

Crown, Cork and Seal Co. 0. 015 .033 .021

Mathieson Chemical Co. 0.087 .034 .069

Standard Oil Esso 0.065 .013 .048

Westinghouse Electric Co. 0.027 .033 .029

State Roads Comm. 0.023 .002 .016

American Oil Co. (Box 1956) 0. 672 .001 .451

American Oil Co. (Box 507) 0.021 .011 .018

Davison 0.039 .048 .042

Glen L. Martin 0. 139 .236 . 171

USF and G Co. 0. 162 .029 . 118

Not Boxes (Zone 3 Go Backs) 0.266 .095 .210

Southern Hotel 0.010 .009 .009

Sherwood Oil Co. 0.085 .004 .058

Chevrolet 0.017 .011 .015

Hutzler Bros. 0. 183 .000 . 123

News -Post 0. 100 .023 .075

New Amsterdam Casualty Co. 0.052 .005 .037

Rated (Zone 3) 0. 195 .006 . 132

Esso 0.241 .000 . 161

C and P Phone Co. PO Boxes 0. 204 .000 . 137

Hecht Co. 0. 185 .000 . 124

Stewards 0.091 .000 .061

Mrs. Filberts Box 26 0. 183 .000 . 123

Total to Box Section(Zone 3) 7.756 1.820 5.800

C and P Phone Co. Box 1591 0.015 .000 .010

C and P Phone Co. Box 1491 0.002 .000 .002

C and P Phone Co. Box 1541 0.018 .000 .012

C and P Phone Co. Box 1461 0.026 .000 .018

C and P Phone Co. Box 1511 0.011 .000 .008

C and P Phone Co. Box 1571 0.024 .000 .016

C and P Phone Co. Box 1471 0.044 . 000 .029

C and P Phone Co. Box 1521 0.009 .000 .006

C and P Phone Co. Box 1581 0.023 .000 .016

C and P Phone Co. Box 1481 0. 031 .000 .021

Total to Tertiary off

Box Section 0. 203 .000 .138

401 0.096 . 193 . 128

402 0. 101 . 115 . 106

403 0.098 . 126 . 108

404 0.050 .096 .065

-28-
APPENDIX A (Continued)

Destination

Percent Percent Percent

First Class Third Class Combined

405 0.053 . 110 .072

406 0. 115 . 134 . 121

407 0.092 . 126 . 103

408 0.072 . 107 .084

409 0.096 . 152 . 115

410 0. 137 . 128 . 134

411 0. 103 .097 . 101

412 0.072 .086 .077

413 0.094 • 119 . 103

414 0.059 . 110 .076

415 0. 113 . 108 . Ill

416 0. 167 . 133 . 155

417 0. 073 .119- .088

418 0.065 . 128 .086

419 0. 103 . 135 . 114

420 0.092 . 140 . 108

421 0.080 . 118 .092

422 0. 110 . 149 . 123

423 0.054 .085 .064

424 0.074 . 106 .085

425 0.096 . 109 . 101

426 0.042 .093 .059

427 0.080 . 171 . 110

428 0.074 . 113 .087

429 0.066 .048 .060

430 0.040 .034 .038

431 0. 129 .058 . 106

432 0.024 .034 .027

Ruxton (Zone 4) 0.044 .065 .051

Govans (Zone 4) 0.021 .042 .028

Unknown (Zone 4) 0.075 . 119 .090

Goucher College 0.096 .080 .091

Black and Decker (Zone 4) 0.082 . 106 .090

Bendix 0.076 . 107 .086

Sheppard Pratt 0.034 .043 .037

Firms Boxes Rated (Zone 4) 0.705 .210 . 542

Tows on (Zone 4) 0.048 .054 .050

Lutherville (Zone 4) 0.047 • 099 .064

Total to Zone 4 3. 948 4. 505 4. 136

W. A. Taylor 0.001 .017 .006

Probation Dept. 0.008 .018 .012

Friez 0.028 .003 .020

Triumph 0.013 .003 .010

Stebbins Anderson 0.039 .000 .026

State Teachers College 0.061 .021 .048

-29-
APPENDIX A (Continued)

Destination

Percent Percent Percent

First Class Third Class Combined

Armco Drainage 0.009 .008 .008

First Federal 0.002 .000 .001

Harry T. Campbell 0.035 .002 .024

Dept. of Health 0.003 .014 .006

Dept of Employees Security 0.003 .009 .005

Clerk of Court 0.007 .011 .008

McCardie and Walsh 0.003 .002 .003

Rev. Lowman 0.042 .011 .032

Hammond Tax Collector 0.005 .005 .005

Drumcliff Burkleigh Kirkley 0.017 .002 .012

Glassip 0.003 .000 .002

Stella Maris 0.023 .002 .016

Union News 0.004 .000 .003

2nd National Bank 0.020 .002 .014

Board of Education 0.037 .006 .027

Baltimore County Police 0.002 .006 .003

Boxes -Towson Tertiary 0.061 .008 .044

Shell Oil Box 6870 0.072 .000 .048

Maryland Etching 0.002 .000 .001

Towson National Bank 0.015 .002 .011

Murray Corp. 0.010 .014 .011

Loyola High S 0.015 :002 .010

Rated-Towson Tertiary 0.054 .000 .036

Black and Decker 0.027 .027 .027

C and P Telephone (Zone 4) 0.060 .003 .041

Immaculate Conception 0.008 .005 .007

American Totalicator 0.014 .005 .011

U. S. Ind. Chemical 0.001 .008 .003

Total to Tertiary Off Zone 4 • .704 .216 . 541

Gray Bar Electric Supply Co. 0.017 .002 .012

502 0.069 .042 .060

503 0.059 .052 .057

Hampton House 0.019 .020 .020

505 0.082 .061 .075

Johns Hopkins Medical School 0.029 .050 .036

Brunning Bros. 0.002 .000 .001

Sinai Hospital 0.089 .076 .085

510 0.055 .046 .052

511 0.065 .060 .063

512 0.081 .096 .086

Johns Hopkins Hospital 0.201 .395 .265

516 0.095 .055 .082

5*17 0. 128 . 105 . 120

518 0.029 .023 .027

519 0.078 .099 .085

30-
APPENDIX A (Continued)

Destination First Class Third Class Combined

East End (Zone 5) 0.043 .015 .034

524 0;083 .076 .081

525 0.091 .095 .092

526 0. 103 .081 .095

C. C. Lang Co. 0.001 .007 .003

Levinson and Klein 0.027 .003 .019

530 0.089 .054 .078

531 0.037 .052 .042

532 0.051 .042 .048

533 0. 122 .082 . 109

Unknown (Zone 5) 0.063 ,070 ,065

J. J. Hains 0.008 .001 .005

General Motors Parts Div. 0.007 .004 .006

Bait Transfer 0.016 .003 .012

Clifton (Zone 5) 0.018 .022 .019

J. H. School of Hygiene 0.014 .040 .022

U. S. Rubber Co. 0.010 .000 .006

Main Office Boxes (Zone 5) 0.010 .000 .006

Gibbs and Co.

'otal to Zone 5

0.001 .000 .000

1 1.892 1.829 1.868

601 0.059 . 101 .073

602 0.059 . 139 .086

603 0.044 .070 .053

604 0.052 .085 .063

605 0.060 .088 .069

606 0.071 .082 .074

607 0.054 .080 .063

608 0.072 . 118 .087

609 0.062 . 113 .079

610 0.075 . 118 .089

611 0.052 . 109 .071

612 0.040 .093 .058

613 0.074 . 135 .094

614 0.064 .091 .073

615 0.060 . 120 .080

616 0.052 .079 .061

617 0.076 .099 .084

618 0.052 . 100 .068

619 0.049 . 143 .080

620 0.053 . 112 .073

621 0.076 .062 .071

622 0.055 .075 .061

623 0.069 . 127 .088

624 0.060 . 125 .081

625 0.038 .070 .048

-31-
APPENDIX A (Continued)

Percent Percent Percent

De stination First Class Third Clas3 Combined

626 0.051 . 145 .082

627 0.055 . 100 .069

628 0.086 .048 .074

629 0.057 .082 .065

630 0.050 .065 .055

631 0.055 .095 .068

632 0.040 .094 .058

633 0.028 .080 .045

634 0.038 .059 .045

635 0.046 .076 .056

636 0.054 .087 .065

637 0.041 .070 .051

638 0.043 .040 .042

639 0.038 .074 .049

RFD 2 0.048 .076 .057

641 0.041 .060 .047

642 0.041 .063 .048

643 0.025 .038 .030

644 0.023 .048 .031

Rexall Drugs (Zone 6) 0.003 .000 .002

American Bank Stationary Co. 0.016 .002 .011

Hamilton (Zone 6) 0.031 .032 .031

Raspeburg (Zone 6) 0.051 .037 .046

Unknovm. (Zone 6)

tal to Zone 6

0. 130 . 160 . 140

To 2. 569 4. 165 3.094

701 0.051 .087 .063

702 0.067 . 168 . 100

703 0.057 .097 .070

704 0.053 . 121 .075

705 0.043 .072 .052

706 0.045 .081 .057

707 0.054 .073 .060

708 0.065 .090 .073

709 0.070 .080 .073

710 0.068 . 147 .094

711 0.068 .078 .071

712 0.050 . 127 .075

713 0.065 .079 .070

714 0.076 .069 .074

715 0.065 .091 .074

716 0.086 .092 .088

717 0.082 .081 .081

718 i 0.047 .095 .063

719 0.051 .060 .054

720 0.048 . 103 .066

-32-
APPENDIX A (Continued)

Percent Percent Percent

Destination Fi rst Class Third Class Combined

721 0.088 .068 .082

722 0.057 .091 .068

723 0.039 .072 .050

724 0.068 .096 .077

725 0.056 .073 .061

726 0.068 . 100 .079

727 0.067 .092 .075

RFD 5 0.054 . 123 .076

729 0.054 .090 .066

730 0.054 .069 .059

731 0.057 .078 .064

732 0.030 .048 .036

733 0.047 .061 .052

734 0.037 .048 .041

735 0.040 .074 .051

736 0.070 .081 .074

737 0.057 .080 .065

738 0.048 .055 .051

740 0.046 . 104 .065

Unknown (Zone 7) 0. 130 . 141 . 134

Gwynn Oak (Zone 7) 0.045 .042 .044

Metro Life Insurance (Zone 7) 0.038 .000 .026

739 0.054 .091 .066

Total to Zone 7 2.515 3.668 2.895

RFD--7 0.064 . 149 .092

802 0.060 .092 .071

803 0. 100 . 181 . 127

804 0.091 . 135 . 105

805 0.059 . 150 .089

806 0.064 . 132 .087

807 0.061 .097 .073

808 0.045 .083 .058

Boxes (Zone 8) 0.027 .028 .027

State Police (Zone 8) 0.010 .006 .008

811 0.065 . 114 .082

812 0.070 . 113 .084

813 0.056 . 124 .079

814 0.049 . 115 .071

Koinonia Foundation 0.007 .006 .006

Peoples Bank 0.014 .004 .011

Thompson Trailer 0.004 .002 .003

Southern Jobbing Co. 0.003 .003 .003

819 0.027 .054 .036

Holy Trinity Fathers 0.090 .002 .061

Pikesville (Zone 8) 0.057 .099 .071

•33-
APPENDIX A (Continued)

Destination

Percent Percent Percent

First Class Third Class Combined

Ingram Hall 0.003 .008 .004

Woodholme Country Club 0.003 .002 .003

Unknown (Zone 8) 0.050 . 104 .067

Total to Zone 8 1.079 1.803 1.318

901 0.062 .076 .067

90Z 0.086 . 104 .092

903 0.069 .069 .069

904 0.076 .081 .078

905 0.060 .076 .065

906 0.080 .080 .080

907 0.044 .047 .045

Bendix (Zone 9) 0.012 .012 .012

909 0.083 . 107 .091

910 0.049 .055 .051

9.11 0.035 .059 .043

Mount Washington (Zone 9) 0.058 .043 .053

Mount St. Agnes 0.015 .043 .024

Unknown (Zone 9) 0.070 • 153 .097

Total to Zone 9 .799 1.005 .867

Roland Park (Zone 10) 0.041 .020 .034

1003 0.072 . 142 .095

Notre Dame (Zone 10) 0.030 .056 .039

St. Mary Seminary 0.032 .047 .037

Loyola College 0.014 .069 .032

100 W University -Parkway 0.023 .028 .025

1009 0.068 ,093 .077

1010 0.074 . 116 .088

1011 0.080 . 130 .096

1012 0. 104 . 134 . 114

1013 0.080 . 106 .089

1014 0.076 . 113 .088

1015 0.090 . 135 . 105

1016 0.040 .044 .041

1017 0.073 . 127 .091

1018 0.081 . 129 .097

1019 0.090 . 117 .099

1020 0.080 . 128 .096

1021 0.084 . 118 .095

Total to Zone 10 1.232 1.852 1.438

S. Schapiro 0.006 .009 .007

Hampden ( Zone 1 1) 0. 130 .081 . 114

Noxema Cream Co. 0.052 .027 .044

-34-
APPENDIX A (Continued)

Destination First Class Third Class Combined

Wyman Park Apartments 0.030 .031 .030

W J Z 0.040 .009 .030

Barton Cotton Co. 0.016 .001 .011

Marine Hospital 0.049 .097 .065

1108 0. 120 . 145 . 128

1109 0.064 .074 .067

1110 0. 110 .086 . 102

1111 0.063 .092 .072

1112 0.080 .097 .086

1113 0. 123 . 173 . 139

1114 0. 128 .089 . 115

1115 0.068 .099 .078

1116 0.098 . 108 . 101

1117 0.076 . 131 .094

Bunting Chemical Co. 0.006 .012 .008

1119 0. 100 .082 .095

1120 0.072 .093 .079

1121 0. 159 . 131 . 149

Penguin Book Co. 0.042 .002 .029

Hedwin 0.013 .013 .013

Balmar 0.011 .016 .012

Schenuit 0.009 .023 .014

American Ice Co. 0.004 .001 .003

Greenspring Dairy- 0.014 .004 .010

Home for Incurables 0.015 .009 .013

Total to Zone 1

L698 1.735 1.708

1201 0.060 . Ill .077

1202 0.051 . 109 .071

1203 0.066 . 125 .086

1204 0.053 . 143 .083

1205 0.070 .084 .074

1206 0.072 .085 .077

1207 0.060 .073 .065

1208 0.051 . 114 .072

1209 0.071 . 101 .081

1210 0.052 . 104 .069

1211 0.070 . 116 .085

1212 0.067 . 118 .084

1213 0.064 .089 .072

1214 0.058 . Ill .076

1215 0.070 . Ill .083

1216 0.063 .224 . 116

1217 0.044 .068 .052

1218 0.080 .121 .094

1219 0. 118 . 109 . 115

-35-
APPENDIX A (Continued)

Destination

Morgan College (Zone 12)

1221

1222

1223

1224

1225

1226

1227

1228

1229

1230

1231

1232

1233

1234

1235

1236

1237

1238

1239

1240

Govans (Zone 12)

1242

1243

1244

1245

1246

1247

Towson (Zone 12)

1249

1250

1251

1252

1253

1254

1255

1256

1257

1258

1259

1260

1261

Boxes -Firms Rated (Zone 12)*

Unknown (Zone 12)

Percent

First Class

0.065

0.052

0.050

0.078

0.051

0.055

0.053

0. 119

0.071

0.056

0.056

0.054

0.048

0. 108

0.069

0.065

0.092

0.065

0.056

0.065

0.053

0.028

0.070

0.061

0.057

0.066

0.050

0.044

0.012

0.024

0.067

0.059

0.059

0.045

0.043

0.071

0.042

0.036

0.058

0.044

0.012

0.027

0.307

0.200

Percent Percent

Third Class Combined

118

096

084

142

065

082

099

137

104

270

090

077

068

140

101

079

131

104

072

070

101

024

099

104

067

080

080

080

046

058

159

087

092

080

104

113

051

072

053

079

015

031

003

200

.082

.067

.061

.099

.056

.064

.068

. 125

.082

. 126

.067

.062

.055

. 119

.079

.069

. 105

.078

.061

.067

.069

.027

.079

.075

.060

.071

.060

.056

.023

.036

.097

.068

.070

.057

.063

.084

.045

.048

.056

.056

.013

.028

.207

.200

Total to Zone 12 4. 103 6. 123 4.772

* Third class mail sorted to proper carrier rather than to this

category.

-36-
0.009 .000 .006

0.006 .000 .004

0.013 .000 .009

0.007 .000 .005

0.007 .000 .005

0.007 .000 .005

0.000 .000 .000

0.011 .000 .007

0.025 .000 .017

0.032 .000 .022

0.024 .002 .017

0.045 .002 .031

0.027 .000 .018

0.020 .000 . 014

0.052 .000 .035

0.007 .000 .005

0.000 .000 .000

0. 006 .000 .004

0.000 .000 .000

0.005 .000 .003

0.000 .000 .000

APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

Allstate Ins. Co.

Boston Old Colony Ins. Co.

John Hancock Ins. Co.

Monumental Life Ins. Co.

Sun Life Ins. Co. of Canada

Equitable Life Ins. Co.

Life Casualty Ins. Co.

General .Adj. Bur.

Metropolitan Life Ins. Co.

General Electric Co.

Rated (Zone 12)

Boxes (Zone 12)

Prudential Life Ins. Co.

Notre Dame Novitiate

L Grief

Associate Loan

Nationwide Adjust 5106 York

Nationwide Adjust 5405 York

Union Trust

Whiting Turner

Amer . Mutual

Total to Zone 12 Tertiary . 303 .004 . 207

1301 0.099 .122 .106

1302 0.089 • 137 . 105

1303 0.083 .106 .090

1304 0.094 .079 .089

1305 0.116 .115 .116

1306 0.093 .073 .087

1307 0.083 .122 .096

1308 0.095 .139 .110

1309 0.072 .111 .085

1310 0.098 .105 .100

Monumental Life Insurance Co. 0.005 .001 .004

1312 0.074 .085 .078

1313 0.095 .088 .093

1314 0.071 .079 .074

1315 0.082 .090 .085

1316 6.107 .118 .111

1317 0.076 .093 .082

1318 0.073 .107 .084

1319 0.087 .089 .088

1320 0.076 .110 .087

1321 0.062 . 135 .086

1322 0.075 . 109 .086

1323 0.057 .081 .065

-37-
APPENDIX A (Continued)

Destination

Percent Percent Percent

First Class Third Class Combined

1324 0.070 . 103 .081

1325 0.063 .068 .065

1326 0.050 .066 .055

1327 0. 112 . 117 . 113

1328 0.090 . 123 . 101

Saint Joseph Hospital 0.051 .051 .051

Rustless 0.012 .067 .030

Sears and Roebuck Co. 0. 131 .005 .089

Metropolitan Life Insurance Co . 0.038 .000 .025

General Automatic 0.041 .018 .033

Clifton (Zone 13) 0.057 .040 .051

Unknown (Zone 13) 0. 106 . 147 . 119

Continental Can Co- 13 0.012 .009 .011

Main Office Boxes (Zone 13) 0.010 .007 .009

East End (Zone 13) 0.032 .018 .027

Total to Zone 13 2.737 3. 133 2.867

1401 0.042 .065 .049

1402 0.052 .088 .064

1403 0.056 .083 .065

1404 0.062 . 112 .078

1405 0.066 .098 .077

1406 0.071 . 150 .097

1407 0.057 .091 .068

1408 0.063 .068 .064

1409 0.048 .088 .061

1410 0.043 .079 .055

1411 9.069 . 101 .080

1412 0.066 .097 .076

1413 0.050 .097 .065

1414 0.075 .059 .069

1415 0.049 .068 .055

1416 0.071 .092 .078

1417 0.054 .073 .060

1418 0.060 .089 .070

1419 0.071 .067 .070

1420 0.062 .094 .072

1421 0.060 .098 .073

1422 0.058 .091 .069

1423 0.053 .088 .064

1424 0.095 . 110 . 100

1425 0.092 .095 .093

1426 0.071 .091 .078

1427 0.111 . 122 . 115

1428 0.054 .073 .060

1429 0.049 . 110 .069

-38-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

1430 0.066 .076 .069

1431 0.081 . 100 .087

1432 0.083 . 115 .094

1433 0.075 . 132 .094

1434 0.059 . 109 .075

1435 0.063 . 122 .082

1436 0.069 . 144 .094

1437 0.049 . 126 .074

1438 0.046 .077 .056

1439 0.047 .094 .062

1440 0.049 .051 .050

1441 0.075 . 109 .086

1442 0.091 . 101 .095

1443 0.036 .062 .045

1444 0.053 .082 .062

1445 0.066 .077 .070

1446 0.040 .088 .056

1447 0.073 .076 .074

1448 0.062 .077 .067

1449 0.026 .032 .028

1450 0.053 . 156 .087

1451 0.038 .067 .047

Hamilton (Zone 14) 0.063 .035 .053

Raspeburg (Zone 14) 0.045 .045 .045

Metro Life Ins. Co. (Zone 14) 0.018 .000 .012

Unknown (Zone 14) 0. 123 .231 . 159

1452-Md-Training School . 0.016 .003 .012

Total to Zone 14 3.395 5.024 3.929

1501 0.049 .099 .065

1502 0.047 .097 .063

1503 0.074 . 125 .091

1504 0.049 . 107 .068

1505 0. 104 . 125 .111

1506 0.069 .084 .074

1507 0.058 . 116 .077

1508 0.093 . 136 . 107

1509 0.092 . 103 .095

1510 0.068 .075 .070

1511 0.095 . 101 .097

1512 0.078 . 118 .091

1513 0.077 . 105 .086

1514 0.061 .099 .073

1515 0.084 . 135 . 101

1516 0.080 . 110 .090

1517 0.094 . 107 .098

-39
APPENDIX A (Continued)

Destination

1518

1519

1520

1521

1522

1523

1524

1525

1526

Unknown (Zone 15)

1528

1529

1530

1531

1532

1533

1534

1535

1536

1537

1538

1539

1540

1541

1542

1-543

1544

1545

1546

1547

1548

1549

1550

1551

1552

1553

1554

1555

1556

Seton Institute

Rated (Zone 15)

Mt. Wash. Roland Park,

Hampden

Arlington (Zone 15)

Gwynn Oak (Zone 15)

Walbrook (Zone 15)

Percent Percent Percent

First Class Third Class Combined

0. 108 .204 . 140

0.078 .093 .083

0.087 . 112 .095

0.065 . 125 .085

0.069 . 103 .080

0.062 . 101 .075

0. 103 .097 . 101

o:o59 . 123 .080

0.087 . 112 .095

0. 100 .217 . 139

0.085 .095 .088

0. 101 . 133 .111

0.051 .093 .065

0.051 .092 .065

0. 135 . 142 . 137

0.066 . 107 .080

0.056 .073 .062

0.093 . 120 . 102

0.080 .095 .085

0.094 .084 .091

0.070 . 191 . 110

0.071 . 136 .093

0.082 . 112 .092

0.082 .099 .088

0.273 .017 . 189

0.070 .090 .077

0.081 . 122 .095

0.046 .086 .059

0. 059 . 123 .080

0.073 .060 .069

0.065 . 107 .078

0.051 .047 .049

0.068 .084 .074

0.076 . 120 ,090

0.059 . 140 .086

0.064 . 163 .096

0.062 .075 .066

0.040 .049 .043

0. 110 .050 .091

0.027 .056 .037

0.056 .065 .059

0.032 .047 .037

0.051 .037 .046

0.071 .079 .074

0.034 .073 .047

-40-
APPENDIX A (Continued)

Destination

Percent Percent Percent

First Class Third Class Combined

Receipe Food Inc. 0.019 .004 .014

Total to Zone 15 4.694 6.395 5.255

1601 0.067 .070 .068

1602 0.079 . 110 .089

1603 0.075 .088 .079

1604 0.054 .087 .065

1605 0.077 . 119 .091

Gwynn Oak (Zone 16) 0.011 .017 .013

Arlington (Zone 16) 0.033 .037 .035

1608 0. 102 .085 .096

1609 0.082 .091 .085

1612 0.054 .059 .056

1613 0.074 . 101 .083

Walbrook-16 0.012 .014 .012

1615 0.082 .082 .082

1617 0.064 .079 .069

1619 0.Q56 .074 .062

1620 0.092 . 125 . 103

1622 0.057 .092 .068

1623 0.064 .095 .074

1624 0.079 .096 .085

1625 0.073 .069 .072

1626 0.085 . 116 .095

1627 0.059 .065 .061

Lutheran Hospital (Zone 16) 0.063 .031 .053

1629 0. 114 .050 .093

1630 0.079 .089 .083

1632 0. 101 . 109 . 103

1633 0.075 . 116 .088

1634 0.080 . 106 .089

1636 0.090 .074 .084

1637 0.062 .093 .072

1638 0.074 . Ill .086

1639 0.065 .083 .071

Druid (Zone 16) 0.037 .036 .036

Unknown (Zone 16) 0.063 .080 .069

Rated (Zone 16) 0.007 .000 .005

Total to Zone 16 2.341 2.749 2.475

1700 0.064 .083 .070

1701 0.058 . 121 .079

1702 0.051 .082 .061

1703 0.073 . 130 .092

1704 0.080 . 117 .092

1705 0.060 .085 .068

-41-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

1706 0.055 .091 .067

1707 0.093 . 112 .099

1708 0.062 . Ill .078

1709 0.091 . 114 .098

1710 0.085 .090 .086

1711 0.072 .095 .080

1712 0.067 .065 .066

1713 0.079 . 101 .086

1714 0.071 . 100 .080

1715 0.053 .081 .062

1716 0.091 . 105 .096

1717 0.064 .095 .074

1718 0.091 .087 .090

1719 0. 113 .077 . 101

1720 0.052 .064 .056

1721 0.058 .076 .064

1722 0.089 .098 .092

1723 0.063 .098 .074

1724 0.075 .082 .077

1725 0.061 .065 .062

1726 0.063 .073 .066

1727 0.068 . 128 .088

1728 0.088 . 124 . 100

1729 0.080 . 110 .090

Franklin (Zone 17) 0.021 .020 .021

Walbrook (Zone 17) 0.048 .054 .050

1730 0.088 .078 .085

1731 0.094 . 100 .096

1732 0.064 .091 .073

1733 0.094 . 115 . 101

1734 0.078 . 114 .090

1735 0.050 .067 .056

West Case (Zone 17) 0.023 .037 .028

1736 0. 103 . 129 . 112

1737 0.050 .075 .058

Home Beneficial Life Ins. Co --17 0.007 .000 .005

Provident Hospital- 17 0.014 .033 .020

Womens Hospital- 17 0.048 .025 .040

Druid (Zone 17) 0.029 .022 .027

Rivera Apartments -17 0.003 .009 .005

Rated (Zone 17) 0.037 .002 .026

Main Office Boxes (Zone 17) 0.005 .008 .006

Temple Garden Apts 0.031 .041 .034

Emersonian Apts 0.012 .025 .016

Esplanade Apts 0.018 .031 .022

Marlborough Apartments 0.013 .024 .017

-42-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

Pennsylvania Produce Terminal 0.020 .004 .015

Unknown (Zone 17) • 0.059 .072 .063

Cannon Shoe Company- 17 0.019 .016 .018

Total to Zone 17 3. 198 4.052 3.478

1801 0.077 . 178 . 110

1802 0. 100 . 151 . 117

1803 0. 124 . 194 . 147

1804 0. 106 . 192 . 135

1805 0.028 .033 .029

1806 0. 173 .123 . 156

1807 0.099 .045 .081

1808 0.058 .092 .069

1809 0.099 . 161 . 120

1810 0.092 . 121 . 101

1811 0. 118 .094 . 110

1812 0.070 .092 .077

1813 0.096 .082 .091

1814 0. 128 .086 . 114

1815 0.049 .086 .061

1816 0.071 .076 .073

1817 0.090 . 190 . 123

1818 0. 169 . 121 . 153

1819 0. 119 .074 . 104

1820 0.221 .074 . 172

1821 0.092 .043 .076

1822 0.057 .090 .068

1823 0.064 .074 .067

1824 0. 122 .088 . Ill

1825 0. 113 . 106 . Ill

1826 0.063 .057 .061

1827 0.097 .080 .092

Johns Hopkins U. (Zone 18) 0.205 .566 .324

1829 0.067 .082 .072

1830 0.074 .090 .079

1831 0.086 .090 .087

1832 0.061 .057 .060

1833 0.064 .072 .066

1834 0.087 .082 .085

1835 0. 054 .080 .062

1836 0.039 .043 .040

1837 0.047 .069 .054

1838 0.057 .072 .062

1839 0.084 .092 .087

1840 0.063 .078 .068

1841 0. 170 .084 . 142

1842 0. 112 .061 .095

-43-
APPENDIX A (Continued)

Destination

Percent Percent Percent

First Class Third Class Combined

1843 0. 105 . 112 . 107

1844 0.090 . 100 .093

1845 0.061 .082 .068

1846 0.080 . 157 . 106

1847 0.079 .059 .072

Firms (Zone 18)* 0.692 .000 .464

1849 0.090 .084 .088

1850 0.071 . 102 .081

1851 0.063 .084 .070

1852 0.070 .088 .076

1853 0.067 . 102 .079

1854 0.058 .098 .071

1855 0.084 .080 .083

1856 0.073 .080 .075

1858 0.080 . 102 .087

1859 0.084 .096 .088

1860 0.071 .078 .073

Commissioner Motor Vehicles 0. 169 .002 . 114

1862 0.087 .074 .083

Unknown (Zone 18) 0.314 . 358 .329

Boxes and Rated (Zone 18) 0. 163 .029 . 119

Total to Zone 18 57oTF 6.388 6.538

Alexander and Alexander 0. 019

Allied Ins. Co. 0.009

Ambassador Apts 0. 032

Blackstone Apts 0.0 11

Calvert Drug 0.013

Cambridge Arms Apt. 0.017

Charge It 0. 123

Fridgidare Corp 0. 007

Greenway Apts 0. 024

Hopkins Apts 0. 022

Homewood Apts 0. 022

International Harvester 0. 007

John Deere Plow Co. 0. 009

NY Life Ins. Co. 0.024

Peterson Howell and Heather 0. 012

Sharp and Dohme 0. 007

Socony Vac Oil Co. 0. 002

State Health 0. 034

Swift and Co. 0. 002

US Veterans Hosp 0.014

Warrenton Apts 0.017

Board of Education 0. 041

Norway Apts 0. 026

*Third class mail sorted to proper carrier

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

.000

rather than to

.013

.006

.021

.007

.008

.012

.082

.005

.016

.015

.015

.004

.006

.016

.008

.005

.002

.023

.002

.010

.011

.027

.018

this category.

-44-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

Union Memorial Hospital 0.077 .000 .051

WBAL 0.067 .000 .045

Holdout (Zone 18) 0.056 .000 .037

Total to Zone 18 Tertiary .694 .000 .465

JAGO 0.002 .000 .002

Central Records Facilities 0.005 .000 .003

Student Det Enlisted 0.023 .001 .016

Headquarters and Hqtrs Co. 0.012 .003 .009

Student Det Officers 0.017 .001 .012

Message Center (Zone 19) 0.036 .004 .026

Fort Holabird 0.032 .002 .022

RD 10 (Zone 19 0.051 . 110 .070

1903 0.047 . Ill .068

1904 0.044 .068 .052

1905 0.034 .095 .054

1906 0.060 .090 .070

Sparrows Point Boxes 0.031 .021 .027

1910 0.060 . 113 .077

1911 0.055 . 100 .070

Bethlehem Steel Co. 0.085 .055 .075

Fort Howard 0.018 .042 .026

Fort Howard Hospital 0.043 .014 .034

Unknown (Zone 19) 0.029 .050 .036

Sparrows Polids 0.013 .013 .013

Arcrods 0.006 .007 .006

Rheem 0.020 .011 .017

Total to Zone 19 .723 .911 .785

2001 0.012 .042 .022

2002 0.004 .000 .003

RFD-16 0.065 .096 .075

2005 0.055 .068 .059

2010 0.053 .068 .058

2011 0.049 .066 .055

2012 0.072 .094 .079

2013 0.057 .093 .069

2014 0.077 . 106 .086

Middle River (Zone 20) 0.035 .032 .034

2016 0.062 .098 .074

2017 0.056 .081 .065

2018 0.061 .051 .057

2019 0.066 . 104 .078

2020 0.046 .051 .048

2021 0.053 .054 .053

RFD-14 0.065 .095 .075

-45-
APPENDIX A (Continued)

Destination First Class

0.055

Third Class

.091

Combined

RFD-15 .067

Total to Zone 20 .943 1.290 1.057

2101 0.080 .098 .086

2102 0.046 .088 .060

2103 0.062 . 122 .082

2104 0.061 .080 .067

2105 0.063 . 118 .081

2106 0.059 .097 .071

Firms (Zones 20 and 21) 0.034 .000 .023

RFD 13 0.040 .068 .049

2109 0.050 .099 .066

2110 0.063 .098 .075

2111 0.065 .095 .075

2112 0.085 . 140 . 103

2113 0.065 .078 .069

2114 0.039 .059 .046

Essex (Zone 21) 0.038 .035 .037

2116 0.070 . 116 .086

2117 0. 130 . 150 .136

2118 0.065 .072 .067

2119 0.048 . 112 .069

RFD 1 0.040 .062 .048

2121 0.078 . 113 .090

2124 0.048 .059 .051

2127 0.061 .084 .069

Unknown 0.088 .000 .059

Total to Zone 21.478 21043 1.665

Highlandtown (Zone 22) 0.017 .040 .025

2202 0.010 .019 .013

2203 0.032 .027 .031

2204 0.037 .060 .044

2205 0.054 .076 .061

Dundalk (Zone 22) 0.086 .060 .077

Unknown (Zone 22) 0.071 . 161 . 101

2208 0.048 .095 .063

2209 0.042 . 106 .063

2210 0.038 .074 .050

2211 0.051 .094 .065

2212 0.071 .074 .072

2213 0.045 .071 .053

2214 0.042 . 106 .063

2215 0.053 .074 .060

2216 0.092 . 155 . 113

-46-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

2217 0.065 . 105 .078

2218 0.073 . 180 . 108

2219 0.042 . 114 .065

2220 0.053 .097 .067

2221 0.057 .098 .071

2222 0.068 . 118 .084

2223 0.037 .092 .055

2224 0.047 . 110 .068

2225 0.031 .084 .049

2226 0.066 .092 .075

2227 0.049 .090 .062

2228 0.040 .074 .051

2229 0.060 . 109 .076

2230 0.059 . 123 .080

2231 0.032 .078 .047

2232 0.053 .099 .068

2233 0.049 . 115 .071

2234 0.065 . 141 .090

2235 0.050 .097 .065

2236 0.050 .099 .066

2237 0.048 . Ill .069

2238 0.049 .076 .058

2239 0.049 . Ill .069

2240 0.053 .095 .067

2241 0.049 .084 .061

2242 0.044 . 106 .064

Total to Zone 22 2. 127 3:990 2.738

Westinghouse (Zone 23) 0.018 .004 .014

2302 0. 107 .067 .094

2303 0.080 .065 .075

2304 0. 127 .079 . Ill

2305 0. 108 .086 . 101

2306 0.072 .051 .065

B and O (Zone 23) 0.005 .007 .006

Main Office Boxes (Zone 23) 0.027 .032 .028

2309 0. 135 . 108 . 126

2310 0. 124 .090 . 113

2311 0. 139 .096 . 125

2312 0. 122 . 110 . 118

2313 0.080 .089 .083

Lasting Products Co. 0.010 .011 .011

Bon Secours Hospital 0.083 .017 .061

2316 0.073 . 101 .082

2317 0.092 .089 .091

2318 0.092 . 104 .096

-47-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

2320 0. 131 . 114 . 125

C. D. Kenny Co. 0.013 .004 .010

Englander Co. 330 Warwick Ave. 0. 007 .004 .006

2323 0. 101 . 104 . 102

2324 0.085 .066 .079

2325 0.089 . 101 .093

2326 0. 103 .071 .093

2327 0. 113 .013 .080

Princess Shopp-23 0.004 .001 .003

Louis Marcus Co -2

3

0.048 .004 .033

2330 0.082 .072 .079

2331 0.091 .082 .088

2332 0.062 .066 .063

2333 0. 088 .078 .085

2334 0. 109 .087 . 102

Rated (Zone 23) 0.056 .001 .038

Comfy Manufacturing Co -2

3

0.039 .003 .028

Corkran Hill Co -2 3 0.019 .012 .017

Md. Lumber Co. 300 N 0.007 .007 .007

Warwick Ave

Franklin Square Hospital 0.063 .011 .046

IJnknown (Zone 23) 0. 131 . 113 . 125

Franklin (Zone 23) 0.045 .030 .040

Seaboard Bros. 0.004 .001 .003

Ovelmo 0,018 .000 .012

Total to Zone 23 3.002 21251 2.757

2401 0.075 .083 .078

2402 0.072 .085 .076

2403 0.071 . 139 .094

2404 0.092 . 136 . 107

2405 0.094 .098 .095

2406 0.073 . 103 .083

2407 0.060 . 121 .080

Main Office Boxes --24 0.047 .043 .046

2409 0.070 . 117 .085

2410 0.088 . 120 .098

2411 0.083 .096 .087

Highlandtown Boxes 0. 125 .050 . 100

2413 0. 171 . 139 . 160

2414 0.080 . 126 .095

2415 0.087 . 104 .093

2416 0.083 . 113 .093

Patterson (Zone 24) 0.033 .032 .032

2418 0. 102 . 116 . 107

2419 0.085 . 157 . 109

-48-
APPENDIX A (Continued)

Percent Percent Percent

Destination I

r irst Class Third Class Combined

2420 0.073 . 143 .096

2421 0.059 .083 .067

2422 0.098 . 126 . 107

2423 0.080 .079 .080

2424 0.075 . 107 .086

2425 0.058 .089 .069

2426 0. 102 . 155 . 119

2427 0.017 .034 .023

2428 0.074 . 108 .085

2429 0.057 .025 .046

2430 0.050 .060 .053

2431 0.080 .096 .085

2432 0.094 . 108 .099

2433 0.082 . 149 . 104

2434 0.070 .055 .065

2435 0.045 .041 .044

2436 0.046 .084 .059

Firms and Rated (Zone 24) 0.403 .341 .383

2439 0.046 .084 .059

2440 0.069 .065 .068

2441 0.054 .061 .056

Unknown (Zone 24) 0. 109 . 145 . 121

Highlandtown (Zone 24) 0.013 .006 .011

Total to Zone 24 3.445 4. 222 3. 703

Rated-Highlandtown Tertiary 0.037 .001 .025

AA Chemical Co. 0.008 .003 .006

American Can Co. 0.013 .013 .013

Amer Smelting and Refining Co.. 0.009 .022 .013

Anchor Post 0.024 .014 .021

City Hospital 0.076 .070 .074

American Standard Radiator 0.010 .018 .012

Continental Can Co. 0.011 .008 .010

Cross and Blackwell 0.024 .026 .024

Gunther Brewery 0.018 .014 .017

National Brewery No. Box No. 0.024 .017 .022

Pemco 0.014 .026 .018

Pompeian Oil 0.022 .022 .022

I C Isaac Co. 0.029 .005 .021

Rubberoid Co. 0.007 .006 .007

Westn Elec Co. 2300 Broening 0.003 .000 .002

Hy

Standard Oil 0.009 .013 .010

Westn Elec Co. 2500 Broening 0. 045 .048 .046

Hy

-49-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

Langenfelter 0.015 .005 .012

Weis kettle 0.007 .009 .008

Total to Zone 24 Tertiary- .405 .340 .383

Brooklyn (Zone 25) 0.011 .008 .010

Brooklyn Boxes 0.082 .043 .069

2503 0.082 .096 .087

2504 0.055 .053 .055

2505 0. 101 .097 .099

2506 0.081 .079 .081

2507 0.097 .067 .087

2508 0.079 .072 .077

2509 0.072 .075 .073

2510 0. 116 . 120 . 117

2511 0.077 .072 .075

2512 0.091 .099 .094

2513 0. 123 .090 . 112

2514 0.075 .069 .073

2515 0.063 .046 .057

2516 0. 115 .069 . 100

2517 0.097 . 124 . 106

2518 0.083 .096 .087

2519 0.087 .059 .078

2520 0.011 .006 .009

2521 0.068 .054 .063

Total to Zone 25 1. 666 1.494 1.609

2601 0.069 . 115 .084

2602 0.056 ,060 .058

2603 0.050 .099 .066

2604 0.033 .071 .045

2605 0.057 .059 .057

Curtis Bay (Zone 26) 0.012 .008 .011

Coast Guard Yard 0.021 .023 .022

Curtis Bay Boxes 0.043 .058 .048

Friendship Internl Airport 0.006 .008 .006

Metro Life Insurance Co. (Zone 0.002 .000 .001

26)

Halethorpe (Zone 26) 0.002 .001 .001

Unknown (Zone 26) 0.025 .056 .035

Main Office Boxes (Zone 26) 0.008 .017 .011

Glen Burnie 0.002 .005 .003

Total to Zone 26 T38~o . 580 ~4~4~9~

-50-
APPENDIX A (Continued)

Destination

Main Office Boxes (Zone 27)

2702

2703

2704

2705

2706

2707

2708

2709

2710

2711

2712

2713

2714

Brooklyn and Curtis Bay-27

2716

2717

2718

2719

2720

2721

Maryland (Zone 27)

Carroll (Zone 27)

Halethorpe (Zone 27)

Unknown (Zone 27)

RFD 4

2727

2728

Total to Zone 27

Percent Percent Percent

First Class Third Class Combined

0.012

0.053

0.045

0.029

0.028

0.023

0.033

0.054

0.041

0.067

0.031

0.040

0.024

0.032

0.009

0.033

0.035

0. 036

0.036

0.034

0.032

0.002

0.014

0.073

0.029

0.035

0.042

0.038

. 960

.042

. 119

. 112

. 102

. 103

.086

.082

.098

.093

.092

.085

. 115

.074

. 108

.019

.096

. 110

.070

. 110

.099

.077

.006

.033

.089

.091

. 118

. 128

.082

2.439

.022

.075

.067

.053

.053

.044

.049

.068

.058

.075

.049

.065

.040

.057

.012

.054

.060

.047

.060

.055

.047

.003

.020

.078

.049

.063

.071

.053

1.447

2801

2802

2803

2804

2805

2806

2807

2808

2809

2810

2811

2812

2813

2814

2815

2816

0.065

0.051

0.048

0.060

0.067

0.062

0.083

0.055

0.049

0.044

0.083

0.061

0.057

0.035

0.064

0.047

.072

.092

.090

. 135

, 114

. 104

. 137

.072

.095

.085

.096

. 106

. 107

.059

. 126

.069

,068

.065

.062

.084

.082

.076

. 101

.060

.065

.058

.088

.075

.073

.043

.084

.054

-51
APPENDIX A (Continued)

Destination First Class ' rhird Class Combined

2817 0.057 . 100 .071

2818 0.042 .063 .049

2819 0.053 .084 .063

2820 0.049 .078 .058

Catonsville (Zone 28) 0.020 .042 .027

2822 0.053 .068 .058

2823 0.061 .095 .072

2824 0.076 .081 .077

2825 0.052 .077 .060

2826 0.059 . 106 .074

Unknown (Zone 28) 0.054 . 108 .072

2828 0.045 .053 .048

Catonsville National Bank 0.026 .003 .018

2830 0.010 .016 .012

2831 0.037 .042 .039

Boxes (Zone 28) 0.032 .027 .031

Carroll (Zone 28) 0.031 .060 .041

St. Charles College 0. 026 .026 .026

Spring Grove State Hosspital 0.044 .021 .036

Total to Zone 28 1.758 2.709 2.070

2902 0.092 .080 .088

Pittsburgh Plate Glass Co. 0.021 .009 .017

2903 0.070 . 108 .082

2904 0.042 .041 .042

2905 0.048 . 114 .070

2906 0.072 . 112 .085

2907 0.057 .039 .051

Mrs. Filbert Margarine Co. 0.019 .005 .015

2909 0.061 .093 .071

2910 0.040 .075 .051

2911 0.055 .080 .063

2912 0.061 .082 .068

2913 0.057 .077 .063

2914 0.071 .084 .075

2915 0.049 .075 .057

2916 0.051 .086 .063

2917 0. 110 . 114 . Ill

2918 0.065 .089 .073

2919 0.057 . 103 .072

2920 0.094 .079 .089

2921 0.062 .080 .068

Commercial Credit Corp 0.028 .000 .019

2923 0.072 . 101 .081

2924 0.068 .084 .073

2925 0. 127 . 153 . 136

-52-
APPENDIX A (Continued)

Destination

2926

2927

2928

Western Auto

2930

2931

2932

2933

2934

2935

St. Agnes Hospital

2937

2938

2939

2940

2941

2942

Catonsville (Zone 29)

2944

2945

Baltimore Sales Book

Carroll (Zone 29)

2948

Unknown (Zone 29)

Total to Zone 29

Main Office Boxes --30

3002

3003

3004

3005

3006

3007

Bethlehem Ship Building

(Zone 30)

3009

3010

3011

3012

3013

3014

Cats Paw (Zone 30)

3016

3017

3018

3019

Percent Percent Percent

First Class Third Class Combined

0.072 .063 .069

0.045 .057 .049

0.072 .063 .069

0.011 .003 .008

0.070 .089 .076

0.064 .066 .065

0.073 . 141 .095

0.056 .085 .065

0.068 . 122 .085

0.063 .081 .069

0.063 .043 .057

0.058 . 105 .074

0.076 .085 .079

0.061 .067 .063

0.061 .081 .067

0.081 .091 .085

0.058 .055 .057

0.034 .048 .039

0.069 .067 .068

0.085 .090 .087

0.032 .018 .027

0.041 .018 .034

0.060 .080 .067

0.096 .237 . 142

3.018 3.818 3.279

0.076 - .081 .078

0.059 .038 .052

0.069 .070 .070

0.085 .078 .083

0.095 .079 .090

0.094 .057 .082

0. 130 . 129 . 130

0.026 .007 .020

0.058 .067 .061

0. 103 .089 .099

0.085 .053 .075

0. 109 .077 .098

0.083 .061 .076

0.096 .059 .084

0.035 .025 .032

0.075 .069 .073

0.087 . 115 .096

0.092 . 129 . 105

0.078 . 118 .091

-53-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

3020 0. 110 . 126 . 115

3021 0.097 .076 .090

Unknown (Zone 30) 0. 150 . 164 . 155

3023 0.060 .075 .065

3024 0. 102 , 112 . 105

3025 0.076 . 117 .089

3026 0.054 .075 .061

3027 0.064 .091 .073

3028 0.054 .049 .053

South (Zone 30) 0.029 .018 .025

3030 0. 135 . 113 . 128

3031 0.090 .049 .076

3032 0.072 . 103 .082

3033 0.077 .095 .083

3034 0. 101 .050 .084

3035 0.054 .095 .068

South Station Boxes (Zone 30) 0.011 .011 .011

3037 0.076 .080 .077

3038 0.045 .020 .037

3039 0.077 .089 .081

3040 0.053 .053 .053

Firms (Zone 30) 0. 349 . 193 .298

Total to Zone 30 3.471 3.255 3.404

Baltimore Transit 0.015 .013 .014

Elliott Mach 0.013 .030 .019

US Printing Litho 0.005 .004 .004

Read Drug 0.046 .022 .038

Seaboard Steel 0.005 .000 .004

M. Shaivitz 0.014 .005 .011

CocaCola 0.010 .005 .008

Davis Masury 0.019 .023 .021

Maryland Match 0.007 .001 .005

Maryland Cup 0.019 .001 .013

Swindell Glass 0.006 .004 .006

Eastern Venetian Blind 0.050 .027 .043

W. T. Cowan 0.010 .001 .007

Co -Ope r Mills 0.023 .022 .023

Maryland Bakery 0.005 .001 .004

Maryland Paper 0.011 .005 .009

Rated (Zone 3) 0.026 .001 .018

South Baltimore Hospital 0.030 .016 .025

Baltimore Paint and Color 0.022 .008 .018

Shofer Furn 0.012 .003 .009

Total to Zone 30 Tertiary . 348 . 192 . 299

-54-
APPENDIX A (Continued)

Destination

3103

3104

3105

3106

3110

3111

3112

3113

Main Office Boxes (Zone 31)

3119

3120

3124

3125

3126

3127

Unknown (Zone 31)

3131

3132

Highlandtown (Zone 31)

Patterson (Zone 31)

Church Home Infirmary

Ruckert Term Corp

Amer. Oil Co.

Total to Zone 31

Percent Percent Percent

First Class Third Class Combined

0.052

0.071

0.079

0.075

0.053

0.063

0.072

0.092

0.004

0.085

0.081

0.075

0.087

0.078

0.078

0.043

0.069

0.078

0.016

0.023

0.058

0.008

0.002

1. 342

.026

.076

.083

.075

.042

.068

.066

.095

.002

. Ill

. 100

.060

. 110

.075

. 117

.065

.075

.066

.017

.018

.021

.006

.000

1.374

.043

.073

.080

.075

.049

.065

.070

.093

.004

.093

.087

.070

.094

.077

.091

.051

.071

.074

.016

.021

.046

.007

.001

1.351

American Credit 0. 008

Army and Air Force Exchange 0. 031

Arundel Corp 0.021

Baltimore City Jail 0.010

Bait. Fed. Savings & Loan 0. 090

B & O Charles & Bait Sts 0. 131

B & O Lombard & Libty Sts 0. 009

B & O Camden Station 0. 022

Baltimore Life Insurance Co. 0.010

Baugh & Sons Co. 0.006

Baumgartner Downing 0. 000

Blums Inc 0. 010

Bragers 0.039

Alex Brown & Sons 0. 021

Bull S S Co 0. 008

Calvert Fire Insurance 0. 015

C & P Phone Co. , St Paul St 0. 009

C & P Phone Co. , Light St 0. 033

Castlebergs 0. 009

City Tax Collector 0. 093

Wm H. Cole & Sons 0. 000

0.004

0.002

0.005

0.003

0.005

0.000

0.000

0.000

0.004

0.006

0.001

0.007

0.005

0.009

0.001

0.005

0.008

0.002

0.001

0.000

0.000

006

021

015

008

062

088

006

015

008

006

000

009

028

017

006

012

009

023

007

063

000

-55-
APPENDIX A (Continued)

Destination

Percent Percent Percent

First Class Third Class Combined

Collector of Customs 0.003 0.000 .002

Commercial Credit, 0.023 0,016 .021

Conn. Genl Life Ins Co 0.005 0.000 .003

Dept. of Public Welfare 0. 033 0.002 .023

Dir Internal Revenue 28 Hpk PI 0.035 0.000 .023

Dir Internal Revenue Custom 0.241 0.000 . 162

Eastern Ace Corp 0.020 0.000 .013

Emerson Drum 0.013 0.006 .011

Enoch Pratt Library- 0.016 0.010 .014

Equitable Life Assn Cashier 0.009 0.000 .006

Eutaw Savings Bank 0.008 0.002 .006

Employee Corp. 0.000 0. 000 .000

Fidelity Bank 0.055 0.000 .037

General Elec Credit 0.000 0.000 .000

Grants 5 and 10 0.006 0.000 .004

Gulf Oil Co 0.003 0.001 .002

Julius Gutman 0.043 0.005 .030

I Hamburger & Sons 0.036 0.002 .025

Harford Ace & Ind 0.000 0.000 .000

Robert & Heard 0.002 0.001 .001

Hecht Co. 0. 125 0.017 .089

N Hess and Sons 0.017 0.002 .012

Hochschild Kohn 0.058 0.001 .039

Hoffberger 0.024 0.001 .016

Home Ins Co 0.016 0.000 .011

Home Mutual Ins Co 0.011 0.001 .008

Home Utilities 0.003 0.002 .003

House Hold Loan 0.007 0.000 .005

Howard Crook Co. 0.004 0.003 .004

Hutzler Bros. 0.094 0.001 .063

Hynson Wescott & Dunning 0.022 0.002 .016

Insurance Co. of North Amer. 0.024 0.001 .016

Josephite Fathers 0.009 0.001 .006

Moses Kahn & Sons 0.012 0.003 .009

S & N Katz Inc 0.031 0.002 .021

Postage Due Firms A-L 0. Q02 0.000 .002

Unknown Firms A-L 0. 100 0.014 .072

Boxes -Firms A-L 0.010 0.002 .007

Leon Levy 0.063 0.001 .043

Liberty Bell Studio 0.009 0.000 .006

Liberty Mutual Ins Co 0.034 0.001 .023

Loyola Bldg & Loan 0.047 0.002 .032

Holdouts 0.029 0.000 .020

Firms M-Z 0.064 0.000 .043

Total to Firms A-L 1.941 . 170 1.358

-56-
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

Maryland General Hospital 0.016 0.000 .011

Meed Miller Co. 0.006 0.000 .004

McCormick Co. 0.059 0.008 .042

Maryland Fire Underwriters 0.008 0.000 .006

Maryland Hospital Service 0.076 0.000 .051

Maryland Penitentiary 0.052 0.003 .036

Md Unemployment 0. 060 0. 000 . 040

Compensation

A. L. Mathias 0.005 0.001 .004

May Co. 0.043 0.000 .029

Mercantile Safe Deposit Trust 0.101 0.017 .073

Mercy Hospital 0.101 0.017 .073

Metro Life Ins 113 E Balto St 0. 000 0. 000 . 000

Metro Life Ins 31 Light St 0.013 0.000 .009

Metro Life Ins 341 Calvert St 0.005 0.000 .004

Monumental Life Ins Co 0.045 0.001 .030

Mutual Benefit Health Ins 0. 003 0. 000 . 002

Perm Mutual Life Ins 0. 002 0. 000 . 001

Penn Thre she rmens Farmers 0.012 0.000 .008

Inc.

Peoples Court 0.021 0.000 .014

Peoples Life Ins Co 0.022 0.000 .015

Police Dept 0.019 0.001 .013

Probation Dept 0.111 0.000 .075

Proctor and Gamble 0.010 0.000 .007

Provident Savings Bank 0.096 0.001 .064

Ramsay Scarlett Co. 0.005 0.000 .004

Real Estate Title Co. 0.003 0.000 .002

Reliable Stores 0.005 0.002 .004

Rices Bakery 0.009 0.002 .007

Riggs Warfield Rolason 0.031 0.002 .021

James W. Rouse & Co. 0.041 0.002 .028

Schleisner Co. 0.008 0.001 .006

Social Security 0.019 0.000 .012

State Accident Fund 0.016 0.000 .011

State TaxComm 0.000 0.000 .000

State Dept of Educators 0.012 0.001 .008

State Dept Budget Procurement 0.025 0.000 .017

Workmans Compensation Comm 0. 033 0. 000 . 022

Stein Bros and Boyce 0.012 0.005 .010

Stewart & Co. 0.067 0.005 .047

Sun Life Ins. Co. 0.058 0.003 .040

Title Guarantee Co. 0.002 0.000 .002

Traffic Court 0.057 0.000 .038

Travelers Ins Co. 0.035 0.000 .024

Union Trust 1226 N Charles St 0. 063 0. 000 . 042

-57'
APPENDIX A (Continued)

Percent Percent Percent

Destination First Class Third Class Combined

United Clay Products Co. 0.006 0.000 .004

Universal Carloading Dist Co 0.004 0.000 .003

Universal Finance 0.008 0.000 .005

University Hospital 0.043 0.002 .030

Van Sant Dugdale Co. 0.019 0.010 .016

Veterans Administration 0.010 0.000 .007

Waverly Press 0.037 0.002 .025

WCAO Radio 0.012 0.000 .008

Weaver Bros 0.027 0.000 .018

Welsh Construction Co. 0.010 0.000 .007

Western Maryland R R 0.012 0.004 .010

Postage Due (Firms M-Z) 0.005 0.000 .004

Unknown (Firms M-Z) 0.048 0.002 .033

Boxes (Firms M-Z) 0.007 0.000 .005

WFBR 0.014 0.001 .010

Whitaker Paper Co. 0.019 0.001 .013

Zamoiski, Jos M 0.016 0.001 .011

Holdouts 0.066 0.000 .044

Shillcrafty 0.008 0.000 .005

Total to Firms M-Z 1. 782 .084 1.238

-58-
APPENDIX B

Tabulation of Estimated Percentages of the Total

Volume to Each Destination for Baltimore

Incoming First Class Mail

Largest 200 Destinations Listed by Name

Cumulative

Percent Percent

001 Dept Health Education Welfare 1.918 1.918

002 Montgomery Ward 32 1.096 3.014

003 American Oil Co (Box 1956) 00.672 3.686

004 Gas and Electric Co 00.672 4.358

005 Boxes (Zone 2) 00.295 4.653

006 1542 00.273 4.926

007 Section 10 1381-1491 00.256 5. 182

008 Dir Internal Revenue Custom 00.241 5.423

009 Esso 00.241 5. 664

010 251 00.238 5.902

011 Internal Revenue 00.229 6. 131

012 208 00.227 6.358

013 Sunpapers 00.225 6. 583

014 1820 00.221 6.804

015 241 00.215 7.019

016 Johns Hopkins U (Zone 18) 00.205 7.224

017 Johns Hopkins Hospital 00.201 7.425

018 Section 13 1621-1717 00. 193 7. 618

019 Hecht Co. 00. 185 7.803

020 Section 9 1231-1378 00. 185 7.988

021 140 00. 184 8. 172

022 245 00. 184 8. 356

023 248 00. 184 8. 540

024 Hutzler Bros. 00. 183 8. 723

025 Mrs Filberts Box 26 00. 183 8.906

026 News -Post Contest 00. 183 9.089

027 210 00. 180 9.269

028 B & O (Zone 1) 00. 178 9.447

029 1806 00. 173 9. 620

030 Blue Cross 00. 173 9.793

031 Hochs child Kohn Co. 00. 173 9.966

032 148 00. 171 10. 137

033 2413 00. 171 10. 308

034 1841 00. 170 10.478

035 243 00. 169 10. 647

036 1818 00. 169 10.816

037 Commissioner Motor Vehicles 00. 169 10.985

038 252 00. 167 11. 152

039 416 00. 167 11.319

040 254 00. 164 11.483

-59-
APPENDIX B (Continued)

Cumulative

Section 12 1501-1617

Percent

00. 164

Percent

041 11. 647

042 Unemployment'Comp Libty St 00. 164 11.811

043 USF & G Co 00. 162 11.973

044 1121 00. 159 12. 132

045 Section 4 451-598 00. 158 12.290

046 145 00. 154 12. 444

047 Equitable Trust Co 00. 152 12. 596

048 Union Trust Co 00. 152 12. 748

049 112 00. 149 12.697

050 255 00. 149 13.1046

051 262 00. 149 13. 195

052 144 00. 145 13. 340

053 127 00. 142 13.482

054 Section 1 1-148 00. 141 13. 623

055 244 00. 140 13. 763

056 Boxes (Zone 1) 00. 140 13.903

057 2311 00. 139 14. 042

058 Glen L. Martin 00. 139 14. 181

059 410 00. 137 14.318

060 1532 00. 135 14.453

061 2309 00. 135 14. 588

062 3030 00. 135 14. 723

063 116 00. 134 14. 857

064 235 00. 133 14. 990

065 First Natl Bank 00. 133 15. 123

066 141 00. 132 15.255

067 250 00. 131 15.386

068 2320 00. 131 15. 517

069 B & O Charles and Bait Sts 00. 131 15. 648

070 Sears & Roebuck Co 00. 131 15. 779

071 2117 00. 130 15.909

072 3007 00. 130 16.039

073 Hampden (Zone 11) 00. 130 16. 169

074 132 00. 129 16.298

075 431 00. 129 16.427

076 517 00. 128 16. 555

077 1114 00. 128 16.683

078 1814 00. 128 16.811

079 212 00. 127 16.938

080 2304 00. 127 17.065

081 2925 00. 127 17. 192

082 Section 7 931-1078 00. 127 17. 319

083 147 00. 125 17.444

084 151 00. 125 17. 569

085 Hecht Co 00. 125 17. 694

086 Highlandtown Boxes 00. 125 17.819

087 Mercantile Safe Deposit Trust 00. 125 17.944

-60-
APPENDIX B (Continued)

088 Section 6 781-928

089 Section 15 1835-1917

090 217

091 232

092 1803

093 2310

094 143

095 1113

096 2513

097 Charge It 098 230

099 240

100 533

101 1824

102 2312

103 153

104 1108

105 Social Security

106 1227

107 1819

108 205

109 233

110 1219

111 1811

112 124

113 129

114 158

115 1305

116 2510

117 Section 16 1935-2017

118 406

119 2516

120 117

121 139

122 154

123 1629

124 259

125 415

126 1719

127 1825

128 2327

129 163

130 1327

131 1842

132 Section 8 1081-1228

133 242

Cumulative

Percent Percent

00. 125 18.069

00. 125 18. 194

00. 124 18.318

00. 124 18. 442

00. 124 18. 566

00. 124 18. 690

00. 123 18.813

00. 123 18.936

00. 123 19.059

00. 123 19. 182

00. 122 19. 304

00. 122 19.426

00. 122 19. 548

00. 122 19. 670

00. 122 19.792

00. 121 19.913

00. 120 20.033

00. 120 20. 153

00. 119 20.272

00. 119 20.391

00. 118 20. 509

00. 118 20. 627

00. 118 20. 745

00. 118 20.863

00. 116 20.979

00. 116 21.095

00. 116 21.211

00. 116 21. 327

00. 116 21.443

00. 116 21. 559

00. 115 21. 674

00. 115 21.789

00. 114 21.903

00. 114 22.017

00. 114 22. 131

00. 114 22. 245

00. 113 22.358

00. 113 22.471

00. 113 22. 584

00. 113 22. 697

00. 113 22.810

00. 112 22.922

00. 112 23.034

00. 112 23. 146

00. 112 23.258

00. Ill 23. 369

-61-
APPENDIX B (Continued)

Cumulative

Pe:rcent Percent

134 256 00. 111 23. 480

135 1427 00. 111 23. 591

136 Probation Dept 00. 111 23. 702

137 120 00. 110 23.812

138 422 00. 110 23.922

139 1110 00. 110 24. 032

140 1556 00. 110 24. 142

141 2917 00. 110 24. 252

142 3020 00. 110 24. 362

143 237 00. 109 24.471

144 2334 00. 109 24. 580

145 3012 00. 109 24. 689

146 Black and Decker 00. 109 24. 798

147 1233 00. 108 24. 906

148 1518 00. 108 25.014

149 2305 00. 108 25. 122

150 Fidelity Balto National Bank 00. 108 25.230

151 103 00. 107 25.337

152 123 00. 107 25.444

153 134 00. 107 25. 551

154 152 00. 107 25. 658

155 203 00. 107 25.765

156 1316 00. 107 25.872

157 2302 00. 107 25.979

158 1804 00. 106 26.085

159 1843 00. 105 26. 190

160 249 00. 104 26.294

161 1012 00. 104 26.398

162 1505 00. 104 26. 502

163 Monumental Life Ins Co 00. 104 26.606

164 146 00. 103 26. 709

165 411 00. 103 26.812

166 419 00. 103 26.915

167 526 00. 103 27.018

168 1524 00. 103 27. 121

169 1736 00. 103 27. 224

170 2326 00. 103 27. 327

171 3010 00. 103 27.430

172 May Co. 00. 103 27. 533

173 234 00. 102 27.635

174 1608 00. 102 27.737

175 2418 00. 102 27.839

176 2426 00. 102 27.941

177 3024 00. 102 28.043

178 125 00. 101 28. 144

179 402 00. 101 28.245

-62-
APPENDIX B (Continued)

Cumulative

Percent Percent

180 1529 00. 101 28. 346

181 1632 00. 101 28.447

182 2323 00. 101 28. 548

183 2505 00. 101 28. 649

184 3034 00. 101 28. 750

185 Mercy Hospital 00. 101 28.851

186 229 00. 100 28.951

187 231 00. 100 29.051

188 247 00. 100 29. 151

189 803 00. 100 29.251

190 1119 00. 100 29.351

191 1802 00. 100 29.451

192 C & P Tele Co 5 Light St-2 00. 100 29. 551

193 News -Post 00. 100 29.651

194 1301 00.099 29. 750

195 1807 00.099 29. 849

196 1809 00.099 29. 948

197 239 00.098 30.046

198 403 00.098 30. 144

199 1116 00.098 30. 242

200 1310 00.098 30. 340

-63-
APPENDIX B (Continued)

No. in Individual Group Cumulative

Rank Group Percent Percent Percent

201 - 1 .098 .098 30.438

202-206 5 .097 .485 30.923

207 - 213 7 .096 .672 31. 595

214-220 7 .095 .665 32.260

221-233 13 .094 1.222 33.482

234-238 5 .093 .465 33.947

239-256 18 .092 1.656 35.603

257-267 11 .091 1.001 36.604

268-277 10 .090 .900 37.504

278-283 6 .089 .534 38.038

28£ - 288 5 . 088 . 440 38. 478

289-301 13 .087 1.131 39.609

302-306 5 .086 .430 40.039

307-319 13 .085 1.105 41.144

320-325 6 .084 .504 41.648

326-338 13 .083 1.079 42.727

339-349 11 .082 .902 43.629

350-359 10 .081 .810 44.439

360-380 21 .080 1.680 46.119

381-390 10 .079 .790 46.909

391-402 12 .078 .936 47.845

403-411 9 .077 .693 48.538

412-427 16 .076 1.216 49.754

428-444 17 .075 1.275 51.029

445-454 10 .074 .740 51.769

455-471 17 .073 1.241 53.010

472-491 20 .072 1.440 54.450

492-510 19 .071 1.349 55.799

511-528 18 .070 1.260 57.059

529-541 13 .069 .897 57.956

542-556 15 .068 1.020 58.976

557-570 14 .067 .938 59-914

571-581 11 .066 .726 60.640

582-605 24 .065 1.560 62.200

606-623 18 .064 1.152 63.352

624-645 22 .063 1.386 64.738

646-660 15 .062 .930 65.668

661-678 18 .061 1.098 66.766

679-698 20 .060 1.200 67.966

699-716 18 .059 1.062 69.028

717-733 17 .058 .986 70.014

734-758 25 .057 1.425 71.439

759-770 12 .056 .672 72.111

771-783 13 .055 .715 72.826

784-803 20 .054 1.080 73.906

804-828 25 .053 1.325 75.231

-64-
APPENDIX B (Continued)

No . in Individual Group Cumulative

Rank Group Percent Percent Percent

829 - 843 15 .052 .780 76.011

844 - 864 21 .051 1.071 77.082

865 - 879 15 .050 .750 77.832

880 - 899 20 .049 .980 78.812

900 - 916 17 .048 .816 79. 628

917 - 925 9 .047 .423 80.051

926 - 937 12 .046 . 552 80. 603

938 - 951 14 .045 .630 81.233

952 - 961 10 .044 .440 81.673

962 - 971 10 .043 .430 82. 103

972 - 984 13 .042 .546 82. 649

985 - 993 9 .041 .369 83.018

994 -1007 14 .040 . 560 83. 578

1008 -1014 7 .039 .273 83.851

1015 -1023 9 .038 .342 84. 193

1024 -1033 10 .037 .370 84. 563

1034 -1039 6 .036 .216 84. 779

1040 -1049 10 .035 .350 85. 129

1050 -1056 7 .034 .238 85.367

1057 -1063 7 .033 .231 85. 598

1064 -1073 10 .032 .320 85.918

1074 -1083 10 .031 .310 86.228

1084 -1087 4 .030 . 120 86. 348

1088 -1093 6 .029 . 174 86. 522

1094 -1099 6 .028 . 168 86. 690

1100 -1107 8 .027 .216 86.906

1108 -1113 6 .026 . 156 87.062

1114 -1118 5 .025 . 125 87. 187

1119 -1131 13 .024 .312 87.499

1132 -1142 11 .023 .253 87. 752

1143 -1149 7 .022 . 154 87.906

1150 -1156 7 .021 . 147 88.053

1157- 1162 6 .020 . 120 88. 173

1163 -1174 12 .019 .228 88.401

1175 -1182 8 .018 . 144 88. 545

1183 -1190 8 .017 . 136 88.681

1191 -1200 10 .016 . 160 88.841

1201 -1211 11 .015 . 165 89.006

1212 -1221 10 .014 . 140 89. 146

1222 -1234 13 .013 . 169 89.315

1235 -1251 17 .012 .204 89.519

1252 -1262 11 .011 . 121 89. 640

1263 -1279 17 .010 . 170 89.810

1280 -1294 15 .009 . 135 89.945

1295 -1307 13 .008 . 104 90. 049

1308 -1326 19 .007 . 133 90. 182

-65-
APPENDIX B (Continued)

No. in Individual Group Cumulative

Rank Group Percent Percent Percent

13Z7 - 1337 11 .006 .066 90. 248

1338 - 1350 13 .005 .065 90.313

1351 - 1358 8 .004 .032 90. 345

1359 - 1373 15 .003 .045 90. 390

1374 - 1386 13 .002 .026 90.416

1387 - 1390 4 .001 .004 90. 420

1391 - 1403 13 .000 .000 90. 420

-66-
APPENDIX C

Tabulation of Estimated Percentages of, the Total

Incoming Third Class Mail

Largest 200 Destinations Listed by Name

Cumulative

Percent Percent

001 Johns Hopkins U (Zone 18) 00. 566 .566

002 Johns Hopkins Hospital 00. 395 .961

003 118 00. 306 1.267

004 1229 00.270 1. 537

005 112 00.267 1.804

006 Glen L. Martin 00.236 2.040

007 210 00.233 2.273

008 120 00.226 2.499

009 1216 00.224 2.723

010 1518 00. 204 2.927

011 1803 00. 194 3. 121

012 401 00. 193 3.314

013 1804 00. 192 3. 506

014 1538 00. 191 3.697

015 1817 00. 190 3.887

016 803 00. 181 4.068

017 2218 00. 180 4.248

018 1801 00. 178 4.426

019 1113 00. 173 4.599

020 427 00. 171 4.770

021 702 00. 168 4.938

022 1553 00. 163 5. 101

023 1809 00. 161 5.262

024 1250 00. 159 5.421

025 1846 00. 157 5.578

026 2419 00. 157 5.735

027 University Hospital 00. 157 5.892

028 1450 00. 156 6.048

029 2216 00, 155 6.203

030 2426 00. 155 6.358

031 2925 00. 153 6. 511

032 409 00. 152 6.663

033 1802 00. 151 6.814

034 211 00. 150 6.964

035 805 00. 150 7. 114

036 1406 00. 150 7. 264

037 2117 00. 150 7.414

038 422 00. 149 7:563

039 2433 00. 149 7.712

040 RFD--7 00. 149 7.861

-67-
APPENDIX C (Continued)

Cumulative

Percent Percent

041 Westinghouse Frdshp Airport 00. 148 8.009

042 710 00. 147 8. 156

043 626 00. 145 8.301

044 1108 00. 145 8.446

045 1436 00. 144 8. 590

046 619 00. 143 8. 733

047 1204 00. 143 8.876

048 2420 00. 143 9.019

049 1003 00. 142 9. 161

050 1223 00. 142 9.303

051 1532 00. 142 9.445

052 2234 00. 141 9. 586

053 2932 00. 141 9.727

054 420 00. 140 9.867

055 1233 00. 140 10.007

056 1552 00. 140' 10. 147

057 2112 00. 140 10.287

058 602 00. 139 10.426

059 1308 00. 139 10. 565

060 2403 00. 139 10.704

061 2413 00. 139 10. 843

062 203 00. 137 10. 980

063 1227 00. 137 11. 117

064 1302 00. 137 11.254

065 2807 00. 137 11.391

066 1508 00. 136 11. 527

067 1539 00. 136 11. 663

068 2404 00. 136 11. 799

069 103 00. 135 11.934

070 231 00. 135 12.069

071 419 00. 135 12.204

072 613 00. 135 12. 339

073 804 00. 135 12.474

074 1015 00. 135 12. 609

075 1321 00. 135 12. 744

076 1515 00. 135 12.879

077 28 04 00. 135 13.014

078 241 00. 134 13. 148

079 406 00. 134 13.282

080 1012 00. 134 13.416

081 252 00. 133 13. 549

082 416 00. 133 13. 682

083 1529 00. 133 13.815

084 Black and Decker 00. 133 13.948

085 806 00. 132 14. 080

086 1433 00. 132 14.212

-68-
APPENDIX C (Continued)

087 1117

088 1121

089 1236

090 125

091 1011

092 1703

093 1018

094 1736

095 3007

096 3018

097 410

098 418

099 1020

100 1727

101 2727

102 623

103 712

104 1017

105 403

106 407

107 1437

108 2414

109 2422

110 2815

Ul 3020

112 624

113 1203

114 1503

115 1505

116 1521

117 1620

118 813

119 1728

120 2517

121 124

122 1328

123 1525

124 1546

125 1806

126 2230

127 RFD 5

128 1301

129 1307

130 1427

131 1435

132 1544

133 2103

Cumulative

Percent Percent

00. 131 14. 343

00. 131 14.474

00. 131 14. 605

00. 130 14.735

00. 130 14.865

00. 130 14.995

00. 129 15. 124

00. 129 15.253

00. 129 15.382

00. 129 15. 511

00. 128 15.639

00. 128 15.767

00. 128 15.895

00. 128 16.023

00. 128 16. 151

00. 127 16.278

00. 127 16.405

00. 127 16.532

00. 126 16.658

00. 126 16. 784

00. 126 16.910

00. 126 17.036

00. 126 17. 162

00. 126 17.288

00. 126 17.414

00. 125 17. 539

00. 125 17.664

00. 125 17.789

00. 125 17.914

00. 125 18.039

00. 125 18. 164

00. 124 18.288

00. 124 18.412

00. 124 18. 536

00. 123 18. 659

00. 123 18. 782

00. 123 18.905

00. 123 19.028

00. 123 19. 151

00. 123 19.274

00. 123 19.397

00. 122 19.519

00. 122 19.641

00. 122 19.763

00. 122 19.885

00. 122 20.007

00. 122 20. 129

-69-
APPENDIX C (Continued)

Cumulative

Percent Percent

134 2934 00. 122 20.251

135 704 00. 121 20.372

136 1218 00. 121 20.493

137 1701 00. 121 20.614

138 1810 00. 121 20.735

139 1818 00. 121 20.856

140 2407 00. 121 20.977

141 615 00. 120 21.097

142 1535 00. 120 21.217

143 1551 00. 120 21.337

144 2410 00. 120 21.457

145 2510 00. 120 21. 577

146 413 00. 119 21.696

147 417 00. 119 21.815

148 1605 00. 119 21.934

149 2702 00. 119 22.053

150 421 00. 118 22. 171

151 608 00. 118 22.289

152 610 00. 118 22.407

153 1021 00. 118 22.525

154 1212 00. 118 22. 643

155 1316 00. 118 22.761

156 1512 00. 118 22.879

157 2105 00. 118 22.997

158 2222 00. 118 23. 115

159 3019 00. 118 23.233

160 Morgan College (Zone 12) 00. 118 23.351

161 RFD 4 00. 118 23.469

162 1019 00. 117 23. 586

163 1327 00. 117 23.703

164 1704 00. 117 23.820

165 2409 00. 117 23.937

166 3025 00. 117 24.054

167 3127 00. 117 24. 171

168 1010 00. 116 24. 287

169 1211 00. 116 24. 403

170 1507 00. 116 24.519

171 1626 00. 116 24. 635

172 1633 00. 116 24.751

173 2116 00. 116 24. 867

174 2418 00. 116 24.983

175 402 00. 115 25.098

176 814 00. 115 25.213

177 1305 00. 115 25.328

178 1432 00. 115 25. 443

179 1733 00. 115 25.558

180 2233 00. 115 25. 673

-70-
APPENDIX C (Continued)

181 2601

182 2712

183 3017

184 811

185 1208

186 1709

187 1734

188 2219

189 2320

190 2805

191 2905

192 2917

193 428

194 609

195 812

196 1014

197 1255

198 1910

199 2121

200 2416

Cumulative

Percent Percent

00. 115 25.788

00. 115 25.903

00. 115 26.018

00. 114 26. 132

00. 114 26.246

00. 114 26.360

00. 114 26.474

00. 114 26. 588

00. 114 26.702

00. 114 26.816

00. 114 26.930

00. 114 27.044

00. 113 27. 157

00. 113 27.270

00. 113 27.383

00. 113 27.496

00. 113 27. 609

00. 113 27.722

00. 113 27.835

00. 113 27.948

-71-
APPENDIX C (Continued)

No. in Individual Group Cumulative

Rank Group Percent Percent Percent

201 - 1 . 113 0, 113 28.061

202 - 216 15' . 112 1.680 29. 741

217 - 228 12 . Ill 1. 332 31.073

229 - 242 14 . 110 1. 540 32. 613

243 - 251 9 . 109 0.981 33. 594

252 - 258 7 . 108 0.756 34. 350

259 - 270 12 . 107 1.284 35. 634

271 - 281 11 . 106 1. 166 36.800

282 - 288 7 . 105 0.735 37. 535

289 - 300 12 . 104 1. 248 38. 783

301 - 309 9 . 103 6.927 39.710

310 - 313 4 . 102 0.408 40. 113

314 - 326 13 . 101 1.313 41.431

327 - 337 11 . 100 1. 100 42. 531

338 - 352 15 .099 1.485 44.016

353 - 364 12 .098 1. 176 45. 192

365 - 378 14 .097 1.358 46. 550

379 - 394 16 .096 1.536 48.086

395 - 414 20 .095 1.900 49. 986

415 - 422 8 .094 0.752 50. 738

423 - 433 11 .093 1.023 51.761

434 - 449 16 .092 1.472 53.233

450 - 462 13 .091 1. 183 54.416

463 - .477 15 .090 1.350 55. 766

478 - 491 14 .089 1.246 57.012

492 - 503 12 .088 1.056 58.068

504 - 510 7 .087 . 609 . 58. 677

511 - 518 8 .086 .688 59. 365

519 - 529 11 .085 .935 60. 300

530 - 546 17 .084 1.428 61. 728

547 - 554 8 .083 .664 62.392

555 - 573 19 .082 1. 558 63.950

574 - 585 12 .081 0.972 64. 922

586 - 606 21 .080 1.680 66. 602

607 - 619 13 .079 1.027 67. 629

620 - 629 10 .078 0. 780 68. 409

630 - 640 11 .077 0.847 69.256

641 - 659 19 .076 1.444 70.700

660 - 674 15 .075 1. 125 71.825

675 - 690 16 .074 1. 184 73,009

691 - 701 11 .073 0.803 73.812

702 - 715 14 .072 1.008 74. 820

716 - 719 4 .071 0.284 75. 104

720 - 731 12 .070 0.840 75. 944

732 - 741 10 .069 0.690 76. 634

742 - 754 13 .068 0.884 77, 518

-72-
APPENDIX C (Continued)

No. in Individual Group Cumulative

Rank Group Percent Percent Percent

755 - 765 11 .067 0. 737 78.255

766 - 775 10 .066 0.660 78.915

776 - 783 8 .065 0. 520 79.435

784 - 1 .064 0.064 79.499

785 - 791 7 .063 0.441 79- 940

792 - 797 6 .062 0.372 80.312

798 - 804 7 .061 0.427 80.739

805 - 815 11 .060 0.660 81. 399

816 - 828 13 .059 0. 767 82. 166

829 - 836 8 .058 0.464 82. 630

837 - 840 4 .057 0.228 82.858

841 - 845 5 .056 0.280 83. 138

846 - 852 7 .055 0.385 83. 523

853 - 859 7 .054 0.378 83.901

860 - 865 6 .053 0.318 94.219

866 - 869 4 .052 0.208 84. 427

870 - 876 7 .051 0.357 84. 784

877 - 883 7 .050 0.350 85. 134

884 - 888 5 .049 0.245 85.379

889 - 895 7 .048 0.336 85. 715

896 - 901 6 .047 0.282 85.997

902 - 905 4 .046 0. 184 86. 181

906 - 1 .045 0.045 86.226

907 - 909 3 .044 0. 132 86.358

910 - 916 7 .043 0.301 86. 659

917 - 926 10 .042 0.420 87.079

927 - 930 4 .041 0. 164 87. 243

931 - 935 5 .040 0.200 87. 443

936 - 938 3 .039 0. 117 87. 560

939- 941 3 .038 0. 114 87. 674

942 - 947 6 .037 0.222 87.896

948 - 1 .036 0.036 87.932

949 - 951 3 .035 0. 105 88.037

952 - 957 6 .034 0.204 88.241

958 - 962 § .033 0. 165 88. 406

963 - 964 2 .032 0.064 88.470

965 - 969 5 .031 0. 155 88. 625

970 - 972 3 .030 0.090 88. 715

973 - 1 .029 0.029 88. 744

974 - 977 4 .028 0. 112 88.856

978 - 983 6 .027 0. 162 89.018

984 - 987 4 .026 0. 104 89. 122

988 - 991 4 .025 0. 100 89.222

992 - 995 4 .024 0.096 89. 318

996 -1001 6 .023 0. 138 89.456

1002 -1006 5 .022 0. 110 89. 566

1007 -1011 5 .021 0. 105 89. 671

-73-
APPENDIX C (Continued)

No. in Individual Group Cumulative

Ran

1015

Group

4

Percent Percent

0.080

Percent

1012 - .020 89.751

1016 - 1017 2 .019 0.038 89. 789

1018 - 1025 8 .018 0. 144 89.933

1026 - 1033 8 .017 0. 136 90.069

1034 - 1039 6 .016 0.096 90. 165

1040 - 1042 3 .015 0.045 90.210

1043 - 1051 9 .014 0. 126 90.336

1052 - 1058 7 .013 0.091 90.427

1059 - 1061 3 .012 0.036 90. 463

1062 - 1070 9 .011 0.099 90. 562

1071 - 1073 3 .010 0.030 90. 592

1074 - 1085 12 .009 0. 108 90. 700

1086 - 1096 11 .008 0.088 90. 788

1097 - 1103 7 .007 0.049 90.837

1104 - 1115 12 .006 .072 90.909

1116 - 1134 19 .005 .095 91.004

1135 - 1155 21 .004 .084 91.088

1156 - 1175 20 .003 .060 91. 148

1176 - 1211 36 .002 .072 91.220

1212 - 1251 40 .001 .040 91.260

1252 - 1349 98 .000 .000 91.260

-74-
APPENDIX D

Tabulation of Estimated Percentages of the Total

Volume to Each Destination for Baltimore

Incoming Combined First and Third Class Mail

Largest 200 Destinations Listed by Name

Percent

Cumulative

Percent

001 Dept Health Education Welfare 1.285 1.285

002 Montgomery Ward 32 00.734 2.019

003 Gas and Electric <Z>o. 00.473 2.492

004 American Oil Co. (Box 1956) 00.451 2.943

005 Johns Hopkins U (Zone 18) 00.324 3.267

006 Johns Hopkins Hoispital 00.265 3. 532

007 Boxes (Zone 2) 00.229 3.761

008 210 00. 197 3.958

009 Section 10 1381-1491 00. 196 4. 154

010 251 00. 192 4.346

011 241 00. 189 4. 535

012 1542 00. 189 4.724

013 112 00. 188 4. 9 12

014 1820 00. 172 5.084

015 Glen L. Martin 00. 171 5.255

016 Sunpapers 00. 169 5.424

017 208 00. 166 5. 590

018 Dir Internal Reve:true Custom 00. 162 5.752

019 Esso 00. 161 5.913

020 245 00. 160 6.073

021 2413 00. 160 6.233

022 118 00. 156 6.389

023 252 00. 156 6.545

024 1806 00. 156 6.701

025 416 00. 155 6.856

026 248 00. 154 7.010

027 Section 13 1621-1717 00. 154 7. 164

028 1818 00. 153 7. 317

029 Internal Re venue 00. 153 7. 470

030 120 00. 149 7.619

031 1121 00. 149 7.768

032 1803 00. 147 7.915

033 140 00. 142 8.057

034 1841 00. 142 8. 199

035 Section 4 451-598 00. 141 8.340

036 1518 00. 140 8.480

037 1113 00. 139 8.619

038 1532 00. 137 8.756

039 148 00. 136 8.892

040 243 00. 136 9.028

-75-
APPENDIX D (Continued)

041 2117

042 2925

043 1804

044 410

045 127

046 3007

047 B and O (Zone 1)

048 Section 9 1231-1378

049 401

050 1108

051 3030

052 803

053 1229

054 2309

055 262

056 1227

057 2311

058 2320

059 144

060 Hecht Co.

061 244

062 422

063 1817

064 Hutzler Bros.

065 Mrs Filberts Box 26

066 News -Post Contest

067 212

068 255

069 254

070 406

071 517

072 1809

073 145

074 1233

075 2426

076 124

077 2312

078 USF & G Co

079 203

080 1802

081 2510

082 Black and Decker

083 103

084 1216

085 1305

086 Blue Cross

087 Hochs child Kohn Co.

Cumulative

Percent Percent

00. 136 9. 164

00. 136 9. 300

00. 135 9.435

00. 134 9.569

00. 132 9- 701

00. 130 9.831

00. 130 9.961

00. 129 10.090

00. 128 10.218

00. 128 10. 346

00. 128 10.474

00. 127 10. 601

00. 126 10.727

00. 126 10.853

00. 125 10.978

00. 125 11. 103

00. 125 11.228

00. 125 11.353

00. 124 11.477

00. 124 11. 601

00. 123 11.724

00. 123 11.847

00. 123 11.970

00. 123 12.093

00. 123 12.216

00. 123 12. 339

00. 122 12.461

00. 122 12. 583

00. 121 12.704

00. 121 12.825

00. 120 12.945

00. 120 13.065

00. 119 13. 184

00. 119 13. 303

00. 119 13.422

00. 118 13. 540

00. 118 13.658

00. 118 13.776

00. 117 13.893

00. 117 14.010

00. 117 14. 127

00. 117 14.244

00. 116 14. 360

00. 116 14. 476

00. 116 14. 592

00. 116 14. 708

00. 116 14. 824

-76-
APPENDIX D (Continued)

Cumulative

Percent Percent

088 Section 12 1501-1617 00. 116 14. 940

089 230 00. 115 15.055

090 409 00. 115 15. 170

091 1114 00. 115 15.285

092 1219 00. 115 15.400

093 1427 00. 115 15. 515

094 3020 00. 115 15. 630

095 132 00. 114 15.744

096 217 00. 114 15.858

097 419 00. 114 15.972

098 1012 00. 114 16.086

099 1814 00. 114 16.200

100 Commissioner Motor Vehicles 00. 114 16.314

101 Hampden (Zone 11) 00. 114 16. 428

102 147 00. 113 16.541

103 233 00. 113 16.654

104 1327 00. 113 16.767

105 2216 00. 113 16.880

106 2310 00. 113 16.993

107 231 00. 112 17. 105

108 250 00. 112 17.217

109 1736 00. 112 17.329

110 2513 00. 112 17.441

111 125 00. 111 17. 552

112 415 00. 111 17.663

113 1316 00. 111 17.774

114 1505 00. 111 17.885

115 1529 00. 111 17.996

116 1824 00. 111 18. 107

117 1825 00. 111 18.218

118 2304 00. 111 18.329

119 2917 00. 111 18.440

120 Boxes (Zone 1) 00. 111 18. 551

121 116 00. 110 18.661

122 427 00. 110 18.771

123 1308 00. 110 18.881

124 1538 00. 110 18.991

125 1801 00. 110 19. 101

126 1811 00. 110 19.211

127 Unemployment Comp Libty St 00. 110 19.321

128 141 00. 109 19.430

129 151 00. 109 19. 539

130 533 00. 109 19. 648

131 2419 00. 109 19.757

132 205 00. 108 19.865

133 232 00. 108 19.973

134 403 00. 108 20.081

-77-
APPENDIX D (Continued)

135 420

136 2218

137 Equitable Trust Co.

138 1508

139 1843

140 2404

141 2418

142 2422

143 Union Trust Co.

144 143

145 158

146 402

147 431

148 1301

.149 1846

150 2517

151 153

152 237

153 804

154 1015

155 1236

156 1302

157 3018

158 3024

159 235

160 1819

161 2433

162 Section 1 1-148

163 129

164 407

165 413

166 1620

167 1632

168 2112

169 Section 6 781-928

170 240

171 1110

172 1535

173 2323

174 2334

175 117

176 411

177 425

178 1116

179 1328 , 180 1515

181 1524

Cumulative

Percent Percent

00. 108 20. 189

00. 108 20.297

00. 108 20.405

00. 107 20. 512

00. 107 20.619

00. 107 20.726

00. 107 20.833

00. 107 20.940

00. 107 21.047

00. 106 21. 153

00. 106 21.259

00. 106 21.365

00. 106 21.471

00. 106 21.577

00. 106 21.683

00. 106 21. 789

00. 105 21.894

00. 105 21.999

00. 105 22. 104

00. 105 22.209

00. 105 22.314

00. 105 22.419

00. 105 22. 524

00. 105 22. 629

00. 104 22.733

00. 104 22.837

00. 104 22.941

00. 104 23.045

00. 103 23. 148

00. 103 23.251

00. 103 23. 354

00. 103 23. 457

00. 103 23. 560

00. 103 23. 663

00. 103 23.766

00. 102 23.868

00. 102 23.970

00. 102 24.072

00. 102 24. 174

00. 102 24.276

00. 101 24. 377

00. 101 24.478

00. 101 24. 579

00. 101 24. 680

00. 101 24.781

00. 101 24.882

00. 101 24.983

-78-
APPENDIX D (Continued)

182 1719

183 1733

184 1810

185 2305

186 2807

187 702

188 1310

189 1424

190 1728

191 2516

192 Highlandtown Boxes

193 1019

194 1223

195 1707

196 2432

197 2505

198 3010

199 123

200 211

Cumulative

Percent Percent

00. 101 25.084

00. 101 25. 185

00. 101 25.286

00. 101 25.387

00. 101 25.488

00. 100 25. 588

00. 100 25. 688

00; 100 25.788

00. 100 25.888

00. 100 25.988

00. 100 26.088

00.099 26. 187

00.099 26.286

00.099 26.385

00.099 26.484

00.099 26. 583

00.099 26. 682

00.098 26. 780

00.098 26.878

-79-
APPENDIX D (Continued)

Rank

201 - 207

208 - 212

213 - 225

226 - 239

240 - 251

252 - 263

264 - 274

275 - 286

287 - 299

300 - 311

312 - 328

329 - 347

348 - 366

367 - 385

386 - 400

401 - 415

416 - 433

434 - 444

445 - 461

462 - 476

477 - 495

496 - 512

513 - 524

525 - 550

551 - 574

575 - 595

596 - 610

611 - 630

631 - 646

647 - 671

672 - 694

695 - 712

713 - 724

725 - 755

756 - 768

769 - 790

791 - 802

803 - 821

822 - 840

841 - 847

848 - 859

860 - 870

871-881

882 - 891

892 - 897

898 - 911

912 - 917

No. in Individual

Group Percent

7 .098

. 5 .097

13 .096

14 .095

12 .094

12 .093

11 .092

12 .091

13 .090

12 .089

17 .088

19 .087

19 .086

19 .085

15 .084

15 .083

18 .082

11 .081

17 .080

15 .079

19 .078

17 .077

12 .076

26 .075

24 .074

21 .073

15 .072

20 .071

16 .070

25 .069

23 ,068

18 .067

12 .066

31 .065

13 .064

22 .063

12 .062

19 .061

19 .060

7 .059

12 .058

11 .057

11 .056

10 .055

6 .054

14 .053

6 .052

Group Cumulative

Percent Percent

.686 27. 564

.485 28.049

1.248 29.297

1.330 30. 627

1. 128 31.755

1. 116 32.871

1.012 33.883

1.092 34.975

1. 170 36. 145

1.068 37.213

1.496 38.709

1.653 40.362

1.634 41,996

1.615 43.611

1.260 44.871

1. 245 46. 116

1.476 47. 592

.891 48. 483

1.360 49. 843

1. 185 51.028

1.482 52,510

1.309 53.819

.912 54.731

1.950 56.681

1.776 58.457

1. 533 59.990

1.080 61.070

1.420 62.490

1. 120 63.610

1.725 65.335

1.564 66.899

1.206 68, 105

.792 68,897

2.015 70.912

.832 71,744

1.386 73. 130

.744 73.874

1. 159 75.033

1. 140 76, 173

.413 76. 586

.696 77.282

. 627 77.909

.616 78. 525

.550 79,075

.324 79. 399

. 742 80. 141

.312 80.453

-80-
APPENDIX D (Continued)

No. in Individual Group Cumulative

Rank Group

15

Percent Percent

.765

Percent

918 - 932 .051 81.218

933 - 937 5 .050 .250 81.468

938 - 947 10 .049 .490 81.958

948 - 958 11 .048 .528 82.486

959 - 965 7 .047 .329 82.815

966 - 973 8 .046 ,368 83. 183

974 - 980 7 .045 .315 83.498

981 - 987 7 .044 .308 83.806

988 - 994 7 .043 .301 84. 107

995 -1001 7 .042 .294 84.401

1002 -1006 5 .041 .205 84. 606

1007 -1013 7 .04(1 .280 84.886

1014 -1017 4 .039 .. 156 85.042

1018 -1020 3 .038 . 114 85. 156

1021 -1027 7 .037 .259 85.415

1028 -1034 7 .036 .252 85. 667

1035 1 .035 .035 85.702

1036 -1042 7 .034 .238 85.940

1043 -1046 4 .033 . 132 86.072

1047 -1050 4 .032 .*28 86.200

1051 -1055 5 .031 . 155 86.355

1056 -1063 8 .030 .240 86. 595

1064 i-1068 5 .029 . 145 86. 740

1069 -1073 5 .028 . 140 86.880

1074 -1084 11 .027 .297 87. 177

1085 -1092 8 .026 .208 87.385

1093 -1098 6 .025 . 150 87.535

1099 -1103 5 .024 . 120 87.655

1104 -1111 8 .023 . 184 87.839

1112 -1121 10 .022 .220 88.059

1122 -1132 11 .021 .231 88.290

1133 -1137 5 .020 . 100 88.390

1138 -1141 4 .019 .076 88. 466

1142 -1150 9 .018 . 162 88. 628

1151 -1160 10 .017 . 170 88. 798

1161 -1173 13 .016 .208 89.006

1174 -1182 9 .015 . 135 89. 141

1183 -1190 8 .014 . 112 89.253

1191 -1202 12 .013 . 156 89.409

1203 -1223 21 .012 .252 89.661

1224 -1241 18 .011 . 198 89.859

1242 -1254 13 .010 . 130 89.989

1255 -1264 10 .009 .090 90.079

1265 -1280 16 .008 . 128 90.207

1281 -1295 15 .007 . 105 90.312

1296 -1320 25 .006 . 150 90.462

-81-
APPENDIX D (Continued)

No . in Individual Group Cumulative

Rank Group

17

Percent

.005

Percent

.085

Percent

1321 - 1337 90. 547

1338 - 1353 16 .004 .064 90.611

1354 - 1370 17 .003 .051 90. 662

1371 - 1382 12 .002 .024 90.686

1383 - 1390 8 .001 .008 90. 694

1391 - 1403 13 .000 .000 90. 694

-82-
APPENDIX E

.Tabulation of Estimated Percentages of the Total

Volume to Each Firm Direct for Baltimore

Incoming First Class Mail

Cumulative

Percent Percent

001 Dept Health Education Welfare 1.918 1.918

002 Montgomery Ward 32 1.096 3.014

003 American Oil Co (Box 1956) 00.672 3. 686

004 Gas and Electric Co 00. 672 4.358

005 Boxes (Zone 2) 00.295 4.653

006 Section 10 1381-1491 00.256 4.909

007 Dir Internal Revenue Custom 00.241 5. 150

008 Esso 00.241 5.391

009 Internal Revenue 00.229 5.620

010 Sunpapers 00.225 5.845

011 Johns Hopkins U (Zone 18) 00.205 6.050

012 Johns Hopkins Hospital 00.201 6.251

013 Section 13 1621-1717 00. 193 6.444

014 Hecht Co. 00. 185 6.629

015 Section 9 1231-1378 00. 185 6.814

016 Hutzler Bros. 00. 183 6.997

017 Mrs. Filberts Box 26 00. 183 7. 180

018 News -Post Contest 00. 183 7. 363

019 B and O (Zone 1) 00. 178 7. 541

020 Blue Cross 00. 173 7. 714

021 Hochs child Kohn Co. 00. 173 7.887

022 Commissioner Motor Vehicles 00. 169 8.056

023 Section 12 1501-1617 00. 164 8.220

024 Unemployment Comp Libty St 00. 164 8.384

025 USF & G Co. 00. 162 8. 546

026 Section 4 451-598 00. 158 8.704

027 Equitable Trust Co. 00. 152 8.856

028 Union Trust Co. 00. 152 9.008

029 Section 1 1-148 00. 141 9. 149

030 Boxes (Zone 1) 00. 140 9.289

031 Glen L. Martin 00. 139 9.428

032 First Natl Bank 00. 133 9.561

033 B & O Charles & Bait Sts 00. 131 9.692

034 Sears & Roebuck Co. 00. 131 9.823

035 Hampden (Zone 11) 00. 130 9.953

036 Section 7 931-1078 00. 127 10.080

037 Hecht Co. 00. 125 10.205

038 Highlandtown Boxes 00. 125 10.330

039 Mercantile Safe Deposit Trust 00. 125 10.455

040 Section 6 781-928 00. 125 10. 580

-83-
APPENDIX E (Continued)

Cumulative

Percent Percent

041 Section 15 1835-1917 00. 125 10.705

042 Charge It 00. 123 10.828

043 Social Security 00. 120 10. 948

044 Section 16 1935-2017 00. 116 11.064

045 Section 8 1081-1228 00. 112 11. 176

046 Probation Dept. 00. Ill 11.287

047 Black and Decker 00. 109 11.396

048 Fidelity Balto National Bank 00. 108 11. 504

049 Monumental Life Ins. Co. 00. 104 11. 608

050 May Co. 00. 103 11.711

051 Mercy Hospital 00. 101 11.812

052 C & P Tele Co. 5 Light St -2 00. 100 11.912

053 News -Post 00. 100 12.012

054 Goucher College 00.096 12. 108

055 Provident Savings Bank 00.096 12.204

056 Hutzler Bros. 00.094 12.298

057 City Tax Collector 00.093 12.391

058 Md Trust Co. 00.091 12.482

059 Stewards 00.091 12. 573

060 Bait Fed Savings and Loan 00.090 12.663

061 Holy Trinity Fathers 00. 090 12.753

062 Sinai Hospital 00.089 12.842

063 Mathieson Chemical Co. 00.087 12.929

064 Dundalk (Zone 22) 00.086 13.015

065 Bethlehem Steel Co. 00.085 13. 100

066 Sherwood Oil Co. 00.085 13. 185

067 Bon Secours Hospital 00.083 13.268

068 Brooklyn Boxes 00.082 13.350

069 Section 14 1735-1817 00.081 13.431

070 Maryland General Hospital 00.079 13. 510

071 Section 17 2035-2137 00.079 13. 589

072 Section 3 301-448 00.079 13.668

073 Section 2 151-298 00.077 13.745

074 Union Memorial Hospital 00.077 13.822

075 Bendix 00.076 13.898

076 City Hospital 00.076 13.974

077 Maryland Hospital Service 00.076 14.050

078 Hutzler Co. 00.075 14. 125

079 Halethorpe (Zone 27) 00.073 14. 198

080 Westinghouse Frdshp Airport 00.073 14,271

081 Shell Oil Box 6870 00.072 14. 343

082 Section 5 601-778 00.071 14.414

083 Maryland Unemployment Hpk PI 00.068 14. 482

084 American Stores 00.067 14. 549

085 Stewart & Co. 00.067 14.616

086 WBAL 00.067 14. 683

087 General Motors Acceptance Corp 00.065 14. 748

-84-
APPENDIX E (Continued)

Cumulative

Percent Percent

088 Morgan College (Zone 12) 00.065 14.813

089 Standard Oil Ess

00.065 14.878

090 Franklin Square Hospital 00.063 14.941

091 Hamilton (Zone 14) 00.063 15.004

092 Leon Levy 00.063 15.067

093 Lutheran Hospital (Zone 16) 00.063 15.130

094 St. Agnes Hospital 00. 063 15. 193

095 Union Trust 1226 N Charles St. 00.063 15.256

096 Boxes -Towson Tertiary 00.061 15.317

097 State Teachers College 00. 061 15. 378

098 C & P Telephone (Zone 4) 00.060 15.438

099 Md. Unemployment Compensation 00. 060 15. 498

100 McCormick Co. 00. 059 15. 557

101 Church Home Infirmary 00.058 15.615

102 Hochschild Kohn 00. 058 15. 673

103 Mount Washington (Zone 9) 00.058 15.731

104 Sun Life Ins. Co. 00.058 15.789

105 Clifton (Zone 13) 00.057 15.846

106 Pikesville (Zone 8) 00.057 15.903

107 Traffic Court 00. 057 15. 960

108 University Hospital 00.057 16.017

109 Fidelity Bank 00.055 16.072

110 Hochschild Kohn Co. 00. 053 16. 125

111 L Grief 00.052 16.177

112 Maryland Casuality Co. 00.052 16.229

113 Maryland Penitentiary 00.052 16.281

114 New Amsterdam Casualty Co. 00.052 16.333

115 Noxema Cream Co. 00.052 16.385

116 Arlington (Zone 15) 00.051 16.436

117 Raspeburg (Zone 6) 00.051 16.487

118 Saint Joseph Hospital 00.051 16.538

119 Eastern Venetian Blind 00. 050 16. 588

120 Marine Hospital 00. 049 16. 637

121 Louis Marcus Co -2

00.048 16.685

122 Towson (Zone 4) 00.048 16.733

123 Women? Hospital - 17 00.048 16.781

124 Loyola Bldg and Loan 00. 047 16. 828

125 L. A. Benson 00.046 16.874

126 Mercantile Trust Co. 00. 046 16. 920

127 Read Drug 00.046 16.966

128 Boxes (Zone 12) 00.045 17.011

129 Franklin (Zone 23) 00.045 17.056

130 Gwynn Oak (Zone 7) 00.045 17.101

131 Monumental Life Ins. Co. 00.045 17.146

132 Westn Elec Co 2500 Broening Hy 00. 045 17. 191

133 C & P Phone Co. Box 1471 , 00.044 17.235

85-
APPENDIX E" (Continued)

Cumulative

Percent Percent

134 Spring Grove State Hospital 00'. 044 17.279

135 Curtis Bay Boxes 00. 043 17.322

136 East End (Zones) 00. 043 17. 365

137 Fort Howard Hospital 00. 043 17. 408

138 Julius Gutman 00.043 17.451

139 May Co. 00. 043 17.494

140 University Hospital 00.043 17. 537

141 Fidelity and Deposit Co. 00.042 17. 579

142 Penguin Book Co. 00. 042 17.621

143 Rev Lowman 00. 042 17. 663

144 Board of Education 00.041 17.704

145 Carroll (Zone 29) 00.041 17.745

146 General Automatic 00.041 17.786

147 James W. Rouse and Co. 00.041 17.827

148 Roland Park (Zone 10) 00.041 17.868

149 Dunn and Bradstreet 00. 040 17.908

150 W J Z 00.040 17.948

151 Bragers 00.039 17.987

152 Comfy Manufacturing Co -200.039 18.026

153 Davison 00.039 18.065

154 Stebbins Anderson 00.039 18. 104

155 Essex (Zone 21) 00.038 18. 142

156 Metropolitan Life Insurance Co. 00.038 18. 180

157 Metro Life Insurance (Zone 7) 00.038 18.218

158 Board of Education 00.037 18.255

159 Cary Machinery Co. 00.037 18.292

160 General Electric Supply Co. 00.037 18.329

161 Waverly Press 00.037 18.366

162 I Hamburger and Sons 00.036 18.402

163 Message Center (Zone 19) 00.036 18.438

164 Cats Paw (Zone 30) 00.035 18.473

165 Dir Internal Revenue 28 Hpk PI 00.035 18. 508

166 Federal Reserve -^Lnk 00.035 18. 543

167 Harry T. Campbell 00.035 18. 578

168 Middle River (Zone 20) 00.035 18. 613

169 Travelers Ins Co. 00.035 18. 648

170 Firms (Zones 20 and 21) 00.034 18.682

171 Liberty Mutual Ins Co. 00.034 18.716

172 Official General Del 33 00.034 18.750

173 Sheppard Pratt 00.034 18.784

174 State Health 00.034 18.818

175 C & P Phone Co. Light St. 00.033 18.851

176 Dept of Public Welfare 00.033 18.884

177 State "B-x 00.033 18.917

178 Workmans Compensation Comm. 00.033 18.950

179 Ambassador Apts 00.032 18.982

-86-
APPENDIX E (Continued)

180 Baltimore Sales Book

181 Boxes (Zone 28)

182 Fort Holabird

183 General Electric Co.

184 St. Mary Seminary

185 Army and Air Force Bcchange

186 C & P Phone Co. Box 1481

187 Koppers Co.

188 Riggs Warfield Rolason

189 Sparrows Point Boxes

190 S & N Katz Inc.

19 1 Temple Garden Apts

192 Notre Dame (Zone 10)

193 South Baltimore Hospital

194 Wyman Park Apartments

195 Druid (Zone 17)

196 I. C. Isaac Co.

197 Johns Ho pkins Medical School

198 South (Zone 30)

199 Commercial Credit Corp

200 Friez

201 Govans (Zone 12)

202 Boxes (Zone 8)

203 Levins on and Klein

204 Prudential Life Ins. Co.

205 Seton Institute

206 Weaver Bros.

207 Westinghouse Electric Co.

208 Bethlehem Ship Building (Zone 30)

209 Catonsville National Bank

210 C & P Phone Co. , Box 1461

211 Norway Apts

212 St. Charles College

213 Emerson Hotel

214 International Harvester Co.

215 Metropolitan Life Ins. Co.

216 State Dept. Budget Procurement

217 Anchor Post

218 Cross and Blackwell

219 C & P Phone Co. , Box 1571

220 Greenway Apts.

221 Hoffberger

222 Insurance Co. of North America

223 National Brewery No. Box Number

224 NY Life Ins. Co.

225 Veterans Administration (Zone 2)

226 100 W. University -Parkway

Cumulative

Percent Percent

00.032 19.014

00.032 19.046

00.032 19.078

00.032 19. 110

00.032 19. 142

00.031 19. 173

00.0-31 19.204

00.031 19.235

00.031 19.266

00.031 19.297

00.031 19.328

00.031 19.359

00.030 19.389

00.030 19.419

00.030 19.449

00.029 19.478

00. 029 19.507

00.029 19.536

00.029 19. 565

00.028 19. 593

00.028 19. 621

00.028 19. 649

00.027 19.676

00.027 19.703

00.027 19.730

00.027 19.757

00.027 19. 784

00.027 19.811

00.026 19.837

00.026 19.863

00.026 19.889

00.026 19.915

00.026 19.941

00.025 19.966

00.025 19.991

00.025 20.016

00.025 20.041

00.024 20.065

00. 024 20.089

00. 024 20. 113

00.024 20. 137

00.024 20. 161

00.024 20. 185

00.024 20.209

00. 024 20.233

00.024 20.257

00.023 20.280

-87-
APPENDIX E (Continued)

Cumulative

Percent Percent

227 A & P Tea Co. 00.023 20. 303

228 Commercial Credit 00.023 20. 326

229 Co-Oper Mills 00.023 20. 349

230 C & P Phone Co. , Box 1581 00.023 20. 372

231 Patterson (Zone 31) 00. 023 20; 395

232 State Roads Comm. 00. 023 20.418*

233 Stella Maris 00.023 20.441

234 Student Det Enlisted 00.023 20.464

235 Baltimore Paint & Color 00.022 20.486

236 B & O Camden Station 00.022 20. 508

237 Homewood Apts. 00.022 20.530

238 Hopkins Apts. 00.022 20. 552

239 Hynson Wescott & Dunning 00.022 20. 574

240 Peoples Life Ins. Co. 00.022 20. 596

241 Pompein Oil 00.022 20. 618

242 Alex Brown & Sons 00.021 20. 639

243 American Oil Co. (Box 507) 00.021- 20. 660

244 Arundel Corp 00.021 20.681

245 Charles Antel 00.021 20.702

246 Coast Guard Yard 00.021 20.723

247 Peoples Court 00.021 20. 744

248 Pittsburgh Plate Glass Co. 00.021 20.765

249 2nd National Bank 00.020 20. 785

250 Catonsville (Zone 28) 00.020 20.805

251 Eastern Ace Corp 00.020 20.825

252 Notre Dame Novitiate 00.020 20.845

253 Pennsylvania Produce Terminal 00. 020 20.865

254 Rheem 00.020 20.885

255 Alexander and Alexander 00.019 20.904

256 Cannon Shoe Company- 17 00.019 20.923

257 Corkian Hill Co -2

00.019 20.942

258 Davis Masury 00.019 20.961

259 Hampton House 00.019 20.980

260 Maryland Cup 00.019 20.999

261 Mrs Filbert Margarine Co. 00.019 21.018

262 Police Dept 00.019 21.037

263 Receipe Food Inc. 00.019 21.056

264 Social Security 00.019 21.075

265 Van Sant Dugdale Co. 00.019 21.094

266 Whitaker Paper Co. 00.019 21. 113

267 C & P Phone Co. , Box 1541 00.018 21. 131

268 Esplanade Apts 00.018 21. 149

269 Fort Howard 00.018 21. 167

270 Gunther Brewery 00.018 21. 185

271 Hpk PI Commr of Mtr Vehls 00.018 21.203

272 Metro Life Ins Co. (Zone 14) 00.018 21.221

273 Ovelmo 00.018 21.239

-88-
APPENDIX E (Continued)

Cumulative

Westinghouse (Zone 23)

Percent

00.018

Percent

274 21.257

275 Cambridge Arms Apt. 00.017 21.274

276 Chevrolet 00.017 21.291

277 Drumcliff Burkleigh Kirkley 00.017 21. 308

278 Gray Bar Electric Supply Co. 00.017 21. 325

279 N. Hess & Sons 00.017 21. 342

280 Student Det. Officers 00.017 21.359

281 Warrenton Apts 00.017 21.376

282 1452-Md-Training School 00.016 21.392

283 American Bank Stationary Co. 00.016 21.408

284 Bait. Transfer 00.016 21.424

285 Barton Cotton Co. 00.016 21.440

286 Enoch Pratt Library 00.016 21.456

287 Home Ins. Co. 00.016 21.472

288 Maryland General Hospital 00.016 21.488

289 State Accident Fund 00.016 21. 504

290 Zamoiski,Jos. M. 00.016 21. 520

291 Baltimore Transit 00.015 21. 535

292 Calvert Fire Insurance 00.015 21. 550

293 Crown, Cork and Seal Co. 00.015 21.565

294 C & P Phone Co. , Box 1591 00.015 21. 580

295 English -American Tailors 00.015 21.595

296 Home for Incurables 00.015 21.610

297 LangenfeIter 00.015 21.625

298 Lord Baltimore Hotel 00.015 21.640

299 Loyola High S. 00.015 21.655

300 Mount St. Agnes 00.015 21.670

301 Towson National Bank 00.015 21.685

302 American Totalicator 00.014 21.699

303 Greenspring Dairy 00.014 21. 713

304 J. H. School of Hygiene 00.014 21.727

305 Loyola College 00.014 21.741

306 M. Shaivitz 00.014 21.755

307 Pemco 00.014 21.769

308 Peoples Bank 00.014 21.783

309 Provident Hospital- 17 00.014 21.797

310 U. S. Veterans Hosp. 00.014 21.811

311 WFBR 00.014 21.825

312 American Can Co. 00.013 21.838

313 Butler Bros. 00.013 21.851

314 Calvert Drug 00.013 21.864

315 C. D. Kenny Co. 00.013 21.877

316 Elliott Mach. 00.013 21.890

317 Emerson Drug 00.013 21.903

318 Hedwin 00.013 21.916

319 Highlandtown (Zone 24) 00.013 21.929

320 John Hancock Ins. Co. 00.013 21.942

-89-
APPENDIX E (Continued)

Cumulative

Percent Percent

321 Marlborough Apartments 00.013 21.955

322 Metro Life Ins. 31 Light St. 00.013 21.968

323 Sparrows Pt. Solids 00.013 21.981

324 Triumph 00.013 21.994

325 Bendix (Zone 9) 00.012 22.006

326 Continental Can Co- 13 00.012 22.018

327 Curtis Bay (Zone 26) 00.012 22.030

328 Emersonian Apts. 00.012 22.042

329 Headquarters and Hdqtrs. Co. 00.012 22.054

330 Moses Kahn & Sons 00.012 22.066

331 Penn Threshermens Farmers Inc. 00.012 22.078

332 Peterson Howell and Heather 00.012 22.090

333 Rustless 00.012 22. 102

334 Shofer Furn. 00.012 22. 114

335 State Dept. of Educators 00.012 22. 126

336 Stein Bros & Boyce 00.012 22. 138

337 Walbrook - 16 00.012 22. 150

338 Western Maryland RR 00.012 22. 162

339 WCAO Radio 00.012 22. 174

340 Balmar 00.011 22. 185

341 Blackstone Apts 00.011 22. 196

342 Brooklyn (Zone 25) 00.011 22.207

343 Continental Can Co. 00.011 22.218

344 C & P Phone Co. , Box 1511 00.011 22.229

345 General Adj Bur. 00.011 22.240

346 Home Mutual Ins. Co. 00.011 22.251

347 Maryland Paper 00.011 22.262

348 South Station Boxes (Zone 30) 00.011 22.273

349 Western Auto 00.011 22.284

350 American Standard Radiator 00.010 22.294

351 Baltimore City Jail 00.010 22.304

352 Baltimore Life Insurance Co. 00.010 22.314

353 Blums Inc. 00.010 22.324

354 Boxes -Firms A-L 00.010 22.334

355 Coca Cola 00.010 22.344

356 Lasting Products Co. 00.010 22.354

357 Murray Corp. 00.010 22. 364

358 Proctor and Gamble 00.010 22. 374

359 Southern Hotel 00.010 22.384

360 State Police (Zone 8) 00.010 22. 394

361 U.S. Rubber Co. 00.010 22.404

362 Veterans Administration 00.010 22.414

363 Welsh Construction Co. 00.010 22.424

364 W. T. Cowan 00.010 22.434

365 Allied Ins. Co. 00. 009 22. 443

366 Allstate Ins. Co. 00.009 22.452

367 Amer. Smelting & Refining Co. 00. 009 22.461

-90-
APPENDIX E (Continued)

Cumulative

Armco Drainage

Percent

00.009

Percent

368 22.470

369 B & O Lombard & Libty Sts. 00.009 22.479

370 Castlebergs 00.009 22.488

371 C & P Phone Co. , St. Paul St. 00.009 22.497

372 C & P Phone Co. , Box 1521 00.009 22. 506

373 Equitable Life Assn Cashier 00.009 22. 515

374 John Deere Plow Co. 00.009 22. 524

375 Josephite Fathers 00.009 22. 533

376 Liberty Bell Studio 00.009 22. 542

377 Rices Bakery 00.009 22.551

378 Schenuit 00.009 22. 560

379 Standard Oil 00.009 22. 569

380 Afro American 00.008 22. 577

381 . American Credit 00.008 22.585

382 A A Chemical Co. 00.008 22.593

383 Bull S § Co. 00.008 22. 601

384 Eutaw avings Bank 00.008 22. 609

385 Immaculate Conception 00.008 22.617

386 J. J. Hains 00.008 22.625

387 Maryland Fire Underwriters 00.008 22.633

388 Probation Dept. 00.008 22.641

389 Ruckert Term Corp 00. 008 22. 649

390 Schleisner Co. 00.008 22.657

391 Shillcrafty 00. 008 22. 665

.392 Universal Finance 00.008 22.673

393 Associate Loan 00.007 22. 680

394 Boxes (Firms M-Z) 00.007 22. 687

395 Clerk of Court 00.007 22. $94

396 Englander Co. 330 Warwick Ave. 00.007 22.701

397 Equitable Life Ins. Co. 00.007 22. 708

398 Fridgidare Corp 00.007 22.715

399 General Motors Parts Div. 00.007 22.722

400 Home Beneficial Life Ins. Co- 17 00.007 22.729

401 Household Loan 00.007 22.736

402 International Harvester 00.007 22. 743

403 Koinonia Foundation 00,007 22.750

404 Maryland Match 00.007 22.757

405 Md. Lumber Co. , 300 N. WarwickAve 00. OX 22. 764

406 Monumental Life Ins. Co. 00.007 22.771

407 Official (Zone 2) 00.007 22.778

408 Rubberoid Co. 00.007 22.785

409 Sharp & Dohme 00.007 22. 792

410 Sun Life Ins. Co. of Canada 00.007 22.799

411 Weiskettle 00.007 22.806

412 Arcrods 00.006 22.812

413 Baugh & Sons Co. 00.006 22.818

414 Boston Old Colony Ins. Co. 00.006 22.824

-91-
APPENDIX E (Continued)

Cumulative

Percent Percent

415 Bunting Chemical Co. 00.006 22.830

416 Friendship Internl Airport 00.006 22.836

417 Grants 5 and 10 00.006 22.842

418 Meed Miller Co. 00.006 22.848

419 Nationwide Adjust 5405 York 00.006 22.854

420 Swindell Glass 00.006 22.860

421 S. Schapiro 00.006 22.866

422 United Clay Products Co. 00.006 22.872

423 A. L. Mathias 00.005 22.877

424 B & O (Zone 23) 00.005 22.882

425 Central Records Facilities 00.005 22.887

426 Conn. Genl Life Ins. Co. 00.005 22.892

427 Hammond Tax Collector 00.005 22.897

428 Maryland Bakery 00.005 22.902

429 Metro Life Ins. , 341 Calvert St. 00.005 22.907

430 Monumental Life Insurance Co. 00.005 22.912

431 Ramsay Scarlett Co. 00.005 22.917

432 Reliable Stores 00.005 22.922

433 Seaboard Steel 00.005 22.927

434 U. S. Printing Litho 00.005 22.932

435 Whiting Turner 00.005 22.937

436 American Ice Co. 00. 004 22.941

437 Howard Crook Co. 00.004 22.945

438 Princess Shopp-23 00. 004 22.949

439 Seaboard Bros. 00.004 22.953

440 Thompson Trailer 00.004 22.957

441 Union News 00. 004 22.961

442 Universal Carloading Dist. Co. 00. 004 22.965

443 Collector of Customs 00.003 22.968

444 Dept. of Health 00.003 22.971

445 Dept. of Employees Security 00.003 22.974

446 Glassip 00.003 22.977

447 Gulf Oil Co. 00.003 22.980

448 Home Utilities 00.003 22.983

449 Ingram Hall 00.003 22.986

450 McCardle & Walsh 00.003 22.989

451 Mutual Benefit Health Ins. 00.003 22.992

452 Real Estate Title Co. 00.003 22.995

453 Rexall Drugs (Zone 6) 00.003 22.998

454 Rivera Apartments -17 00.003 23.001

455 Southern Jobbing Co. 00.003 23.004

456 Westn Elec Co. 2300 Broening Hy 00.003 23.007

457 Woodholme Country Club 00.003 23.010

458 Amer. Oil Co. 00.002 23.012

459 Baltimore County Police 00.002 23.014

460 Brunnihg Bros. 00.002 23.016

461 *C & P Phone Co. Box 1491 00.002 23.018

-92-
APPENDIX E (Continued)

Cumulative

First Federal

Percent

00.002

Percent

462 23.020

463 JAGO 00.002 23.022

464 Maryland Etching 00.002 23.024

465 Metro Life Insurance Co (Zone 26) 00.002 23.026

466 Penn Mutual Life Ins 00.002 23.028

467 Robert and Heard 00.002 23.030

468 Socony Vac Oil Co. 00.002 23.032

469 Swift and Co. 00.002 23.034

470 Title Guarantee Co. 00.002 23.036

471 C C Lang Co. 00.001 23.037

472 Gibbs and Co. 00.001 23.038

473 U. S. Ind Chemical 00.001 23.039

474 W. A. Taylor 00.001 23.040

475 Amer. Mutual 00. 000 23.040

476 Baumgartner Downing 00.000 23.040

477 Employee Corp. 00.000 23.040

478 General Elec. Credit 00.000 23. 040

479 Hartford Ace.and Ind. 00.000 23.040

480 Life Casualty Ins. Co. 00.000 23.040

481 Maryland H spital Service 00.000 23.040

482 Maryland Gen. Hosp. 00.000 23.040

483 Metro Life Ins 113 E. Balto St. 00.000 23.040

484 Nationwide Adjust 5106 York 00.000 23.040

485 State Tax Comm 00.000 23.040

486 Union Trust 00.000 23.040

487 Wm. H. Cole and Sons 00.000 23.040

-93-
APPENDIX F

Tabulation of Estimated Percentages of the Total

Volume to Each Firm Direct for Baltimore

Incoming Third Class Mail

Cumulative

Percent Percent

001 Johns Hopkins U. (Zone 18) 00. 566 .566

002 Johns Hopkins Hospital 00.395 .961

003 Glen L. Martin 00.236 1, 197

004 University Hospital 00. 157 1. 354

005 Westinghouse Frdshp Airport 00. 148 1. 502

006 Black and Decker 00. 133- 1.635

007 Morgan College (Zone 12) 00. 118 1.753

008 Bendix 00. 107 1.860

009 Section 4 451-598 00. 107 1.967

010 Pikesville (Zone 8) 00.099 2.066

011 Marine Hospital 00.097 2. 163

012 Boxes (Zone 2) 00.095 2.258

013 Halethorpe (Zone 27) 00.089 2. 347

014 Hampden (Zone 11) 00.081 2.428

015 Goucher College 00.080 2. 508

016 Section 13 1621-1717 00.076 2. 584

017 Sinai Hospital 00.076 2.660

018 Section 10 1381-1491 00.074 2.734

019 City Hospital 00.070 2.804

020 Loyola College 00.069 2.873

021 Gas and Electric Co. 00.067 2.940

022 Rustless 00. 067 3.007

023 Section 16 1935-2017 00.063 3.070

024 Dundalk (Zone 22) 00.060 3. 130

025 Curtis Bay Boxes 00.058 3. 188

026 Koppers Co. 00.058 3.246

027 Section 6 781-928 00.058 3. 304

028 Notre Dame (Zone 10) 00.056 3. 360

029 Seton Institute 00.056 3.416

030 Bethlehem Steel Co. 00.055 3.471

031 Sunpapers 00.054 3. 525

032 Towson (Zone 4) 00.054 3. 579

033 Boxes (Zone 1) 00.052 3. 631

034 Saint Joseph Hospital 00.051 3. 682

035 Highlandtown Boxes 00.050 3. 732

036 Johns Hopkins Medical School 00.050 3. 782

037 Davison 00.048 3.830

038 Westn Elec. Co. 2500 Broening Hy 00.048 3.878

039 St. Mary Seminary 00.047 3.925

040 Brooklyn Boxes 00. 043 3.968

-94-
APPENDIX F (Continued)

Cumulative

Mount Washington (Zone 9)

Percent

00.043

Percent

041 4.011

042 Mount St. Agnes 00. 043 4.054

043 Sheppard Pratt 00.043 4.097

044 St. Agnes Hospital 00. 043 4. 140

045 Catonsville (Zone 28) 00. 042 4. 182

046 Fort Howard 00.042 4.224

047 Gwynn Oak (Zone 7) 00. 042 4.266

048 Temple Garden Apts 00.041 4. 307

049 Clifton (Zone 13) 00. 040 4.347

050 J H School of Hygiene 00. 040 4.387

051 Section 7 931-1078 00. 040 4.427

052 Section 17 2035-2137 00.039 4.466

053 Arlington (Zone 15) 00.037 4. 503

054 Fidelity Balto National Bank 00.037 4. 540

055 Raspeburg (Zone 6) 00.037 4. 577

056 Section 14 1735-1817 00.037 4.614

057 Section 5 601-778 00.037 4.651

058 Essex (Zone 21) 00.035 4.686

059 Hamilton (Zone 14) 00.035 4. 721

060 Section 3 301-448 00.035 4. 756

061 Mathieson Chemical Co. 00.034 4. 790

062 B & O (Zone 1) 00.033 4.823

063 Crown, Cork and Seal Co. 00.033 4.856

064 Provident Hospital- 17 00.033 4.889

065 Westinghouse Electric Co. 00.033 4.922

066 Middle River (Zone 20) 00.032 4.954

067 Esplanade Apts 00.031 4.985

068 Lutheran Hospital (Zone 16) 00.031 5.016

069 Section 1 1-148 00.031 5.047

070 Wyman Park Apartments 00.031 5.078

071 Elliott Mach. 00.030 5. 108

072 Franklin (Zone 23) 00.030 5. 138

073 Hutzler Co. 00.030 5. 168

074 USF & G Co. 00.029 5. 197

075 100 W University -Parkway 00.028 5.225

076 Boxes (Zone 8) 00.028 5.253

077 Section 2 151-298 00.028 5.281

078 Boxes (Zone 28) 00.027 5.308

079 Eastern Venetian Blind 00.027 5.335

080 Noxema Cream Co. 00.027 5.362

081 Cross and Blackwell 00.026 5. 388

082 Pemco 00.026 5.414

083 St. Charles College 00.026 5.440

084 Cats Paw (Zone 30) 00.025 5.465

085 Emersonian Apts 00.025 5.490

086 Womens Hospital- 17 00.025 5. 515

087 Govans (Zone 12) 00. 024 5. 539

-95-
APPENDIX F (Continued)

088 Marlborough Apartments

089 Section 8 1081-1228

090 Coast Guard Yard

091 Davis Masury

092 Maryland General Hospital

093 News -Post

094 Schenuit

095 Amer. Smelting & Refining Co.

096 Co-Oper Mills

097 Druid (Zone 17)

098 Pompeian Oil

099 Read Drug

100 Church Home Infirmary

101 Official General Del 33

102 Sparrows Point Boxes

103 Spring Grove State Hospital

104 State Teachers College

105 Hampton House

106 Roland Park (Zone 10)

107 Section 12 1501-1617

108 Maryland Casuality Co.

109 American Standard Radiator

110 Baltimore Sales Book

111 Carroll (Zone 29)

112 General Automatic

113 Hochs child Kohn Co.

114 Patterson [Zone 31)

115 Probation ept

116 South (Zone 30)

117 Bon Secours Hospital

118 Equitable Trust G>.

119 Hecht Co.

120 Mercy Hospital

121 National Brewery No Box Number

122 Section' 15 1835-1917

123 W. A. Taylor

124 Balmar

125 Cannon Shoe Company-17

126 Commercial Credit

127 Fidelity and Deposit Co.

128 South Baltimore Hospital

129 East End (Zone 5)

130 Union Trust Co.

131 Anchor Post

132 Dept of Health

133 Fort Howard Hospital

Cumulative

Percent Percent

00.024 5. 563

00.024 5. 587

00.023 5. 610

00.023 5. 633

00.023 5. 656

00.023 5.679

00.023 5.702

00.022 5.724

00.022 5.746

00.022 5.768

00.022 5.790

00.022 5.812

00.021 5.833

00.021 5.854

00.021 5.875

00.021 5.896

00.021 5.917

00.020 5.937

00.020 5.957

00.020 5.977

00.019 5.996

00.018 6.014

00.018 6.032

00.018 6.050

00.018 6.068

00.018 6.086

00.018 6. 104

00.018 6. 122

00.018 6. 140

00.017 6. 157

00.017 6. 174

00.017 6. 191

00.017 6.208

00.017 6.225

00.017 6.242

00.017 6.259

00.016 6.275

00.016 6.291

00.016 6.307

00.016 6.323

00.016 6. 339

00.015 6.354

00.015 6. 369

00.014 6. 383

00.014 6. 397

00.014 6.411

-96-
APPENDIX F (Continued)

Cumulative

Gunther BreweryPercent00.014

Percent

134 6.425

135 Lord Baltimore Hotel 00.014 6.439

136 May Co. 00.014 6.453

137 Murray Corp. 00.014 6.467

138 Section 9 1231-1378 00.014 6.481

139 Walbrook-16 00.014 6.495

140 American Can Co. 00.013 6. 508

141 Baltimore Transit 00.013 6. 521

142 Hedwin 00.013 6. 534

143 Sparrows Pt. Solids 00.013 6. 547

144 Standard Oil Esso 00.013 6. 560

145 Standard Oil 00.013 6. 573

146 Bendix (Zone 9) 00.012 6. 585

147 Bunting Chemical Co. 00.012 6. 597

148 Corkran Hill Co-23 00.012 6. 609

149 American Oil Co. (Box 507) 00.011 6.620

150 Chevrolet 00.011 6. 631

151 Clerk of Court 00.011 6.642

152 Franklin Square Hospital 00.011 6. 653

153 Lasting Products Co. 00.011 6.664

154 Md. Trust Co. 00.011 6.675

155 Rev Lowman 00.011 6.686

156 Rheem 00.011 6. 697

157 South Station Boxes (Zone 30) 00.011 6. 708

158 A & P Tea Co. 00.010 6. 718

159 Enoch Pratt Library 00.010 6. 728

160 Van Sant Dugdale Co. 00.010 6. 738

161 Alex Brown & Sons 00.009 6.747

162 Continental Can Co- 13 00.009 6.756

163 Dept of Employees Security 00.009 6.765

164 Emerson Hotel 00.009 6. 774

165 First Natl Bank 00.009 6. 783

166 Home for Incurables 00.009 6. 792

167 Pittsburgh Plate Glass Co. 00.009 6.801

168 Rivera Apartments -17 00.009 6.810

169 Southern Hotel 00.009 6.819

170 S. Schapiro 00.009 6.828

171 Weiskettle 00.009 6.837

172 WJZ 00.009 6.846

173 Armco Drainage 00.008 6.854

174 Baltimore Paint and Color 00.008 6.862

175 Boxes-Towson Tertiary 00.008 6.870

176 Brooklyn (Zone 25) 00.008 6. 878

177 Continental Can Co. 00.008 6.886

178 Curtis Bay (Zone 26) 00.008 6.894

179 C & P Phone Co. St. Paul St. 00.008 6.902

-97-
APPENDIX F (Continued)

Cumulative

Percent Percent

180 Friendship Internl Airport 00.008 6.910

181 Ingram Hall 00.008 6.918

182 McCormick Co. 00.008 6.926

183 US Ind. Chemical 00.008 6.934

184 Afro American 00.007 6.941

185 Arcrods 00.007 6.948

186 Bethlehem Ship Building (Zone 30) 00.007 6.955

187 Blums Inc. 00.007 6.962

188 B & O (Zone 23) 00.007 6.969

189 C C Lang Co. 00.007 6.976

190 Md Lumber Co. 300 N. Warwick Ave. 00.007 6.983

191 Baltimore County Police 00.006 6.989

192 Baugh & Sons Co. 00.006 6.995

193 Board of Education 00.006 7.001

194 Emerson Drug 00. 006 7.007

195 Highlandtown (Zone 24) 00.006 7.013

196 Koinonia Foundation 00.006 7.019

197 Mercantile Safe Deposit Trust 00.006 7.025

198 Mercantile Trust Co. 00. 006 7.031

199 Rubberoid Co. 00.006 7.037

200 Ruckert Term Corp. 00.006 7.043

201 State Police (Zone 8) 00.006 7.049

202 American Totalicator 00.005 7.054

203 Arundel Corp 00.005 7.059

204 Bait Fed Savings and Loan 00.005 7.064

205 Bragers 00. 005 7. 069

206 Calvert Fire Insurance 00.005 7.074

207 Cary Machinery Co. 00.005 7.079

208 Coca Cola 00.005 7.084

209 Hammond Tax Collector 00. 005 7.089

210 Immaculate Conception 00.005 7.094

211 I. C. Isaac Co. 00.005 7. 099

212 Julius Gutman 00. 005 7. 104

213 Langenfelter 00.005 7. 109

214 Maryland Paper 00.005 7. 114

215 Mrs. Filbert Margarine Co. 00.005 7. 119

216 M. Shaivitz 00.005 7. 124

217 New Amsterdam Casualty Co. 00.005 7. 129

218 Sears and Roebuck Co. 00. 005 7. 134

219 Stein Bros and Boyce 00.005 7. 139

220 Stewart and Co. 00.005 7. 144

221 American Stores 00.004 7. 148

222 American Credit 00.004 7. 152

223 Baltimore Life Insurance Co. 00.004 7. 156

224 Butler Bros 00.004 7. 160

225 Charles Antel 00.004 7. 164

226 C. D. Kenny Co. 00. 004 7. 168

-98-
APPENDIX F (Continued)

227 Englander Co. 330 Warwick Ave,

228 English-American Tailors

229 General Electric Supply Co.

230 General Motors Parts Div.

231 Greenspring Dairy

232 Louis Marcus Co-23

233 Message Center (Zone 19)

234 Pennsylvania Produce Terminal

235 Peoples Bank

236 Receipe Food Inc.

237 Sherwood Oil Co.

238 Swindell Glass

239 U. S. Printing Litho

240 Western Maryland R R

241 Westinghouse (Zone 23)

242 1452-Md-Training School

243 A A Chemical Co.

244 Baltimore City Jail

245 Bait. Transfer

246 Catonsville National Bank

247 Comfy Manufacturing Co-23

248 C & P Telephone (Zone 4)

249 Federal Reserve Bank

250 Friez

251 Headquarters and Hdqtrs Co.

252 Howard Crook Co.

253 Levins on and Klein

254 Maryland Penitentiary

255 Maryland Hospital Service

256 Moses Kahn and Sons

257 Shofer Furn

258 Southern Jobbing Co.

259 Sun Life Ins. Co.

260 Triumph

261 Western Auto

262 2nd National Bank

263 American Bank Stationary Co.

264 Army and Air Force Exchange

265 Boxes -Firms A-L

266 Boxes (Zone 12)

267 Commissioner Motor Vehicles

268 C & P Phone Co. Light St.

269 Dept of Public Welfare

270 Drumcliff Burkleigh Kirkley

271 Eutaw Savings Bank

272 Fort Holabird

Cumulative

Percent Percent

00.004 7. 172

00.004 7. 176

00.004 7. 180

00.004 7. 184

00.004 7. 188

00.004 7. 192

00.004 7. 196

00.004 7.200

00.004 7.204

00.004 7.208

00.004 7.212

00.004 7.216

00.004 7.220

00.004 7.224

00.004 7.228

00.003 7.231

00.003 7.234

00.003 7.237

00.003 7.240

00.003 7.243

00.003 7.246

00.003 7.249

00.003 7.252

00.003 7.255

00.003 7.258

00.003 7.261

00.003 7.264

00.003 7.267

00.003 7.270

00.003 7.273

00.003 7.276

00.003 7.279

00.003 7.282

00.003 7.285

00.003 7.288

00.002 7. 290

00.002 7.292

00.002 7.294

00.002 7.296

00.002 7.298

00.002 7.300

00.002 7. 302

00.002 7. 304

00. 002 7. 306

00.002 7. 308

00.002 7. 310

-99
APPENDIX F (Continued)

Cumulative

Gray Bar Electric Supply Co.

Percent

00.002

Percent

273 7. 312

274 Harry T. Campbell 00. 002 7. 314

275 Holy Trinity Fathers 00.002 7. 316

276 Home Utilities % 00.002 7. 318

277 Hynson Wescott and Dunning 00.002 7. 320

278 I. Hamburger & Sons 00.002 7. 322

279 James W. Rouse & Co. 00.002 7. 324

280 Loyola Bldg & Loan 00.002 7. 326

281 Loyola High S. 00.002 7. 328

282 McCardle and Walsh 00.002 7. 330

283 Monumental Life Ins. Co. 00.002 7. 332

284 N. Hess & Sons 00.002 7. 334

285 Penguin Book Co. 00.002 7. 336

286 Reliable Stores 00.002 7. 338

287 Rices Bakery 00.002 7. 340

288 Riggs Warfield Rolason 00.002 7. 342

289 State Roads Comm. 00.002 7. 344

290 Stella Maris 00.002 7. 346

291 S & N Katz, Inc. 00.002 7. 348

292 Thompson Trailer 00.002 7. 350

293 Towson National Bank 00.002 7. 352

294 University Hospital 00.002 7. 354

295 Veterans Administration (Zone 2) 00.002 7. 356

296 Waverly Press 00.002 7. 358

297 Woodholme Country Club 00.002 7. 360

298 American Oil Co. (Box 1956) 00.001 7. 361

299 American Ice Co. 00.001 7. 362

300 A. L. Mathias 00.001 7. 363

301 Barton Cotton Co. 00. 001 7. 364

302 Baumgartner Downing 00.001 7. 365

303 Bull S S Co. 00.001 7. 366

304 Castlebergs 00.001 7. 367

305 C & P Tele Co. 5 Light St-2 00.001 7. 368

306 Gulf Oil Co. 00.001 7. 369

307 Hochs child Kohn 00.001 7. 370

308 Hoffberger 00.001 7. 371

309 Home Mutual Ins. Co. 00.001 7. 372

310 Hutzler Bros. 00. 001 7. 373

311 Insurance Co. of North America 00. 001 7. 374

312 International Harvester Co. 00.001 7. 375

313 Josephite Fathers 00.001 7. 376

314 J. J. Hains 00.001 7. 377

315 Leon Levy 00.001 7. 378

316 Liberty Mutual Ins. Co. 00.001 7. 379

317 L. A. Benson 00.001 7. 380

318 Maryland Cup 00.001 7. 381

-100-
APPENDIX F (Continued)

319 Maryland Match

320 Maryland Bakery

321 Monumental Life Ins. Co.

322 Monumental Life Insurance Co.

323 Official (Zone 2)

324 Police Dept.

325 Princess Shopp-23

326 Provident Savings Bank

327 Robert and Heard

328 Schleisner Co.

329 Seaboard Bros.

330 State Dept of Educators

331 Student Det. Enlisted

332 Student Det. Officers

333 Unemployment Comp. Libty St.

334 Whitaker Paper Co.

335 WFBR

336 W. T. Cowan

337 Zamoiski, Jos. M.

338 Amer. Oil Co.

339 Blue Cross

340 Boxes (Firms M-Z)

341 Brunning Bros.

342 B & O Charles & Bait Sts

343 B & O Camden Station

344 B & O Lombard & Libty Sts.

345 Central Records Facilities

346 City I*ax Collector

347 Collector of Customs

348 Commercial Credit Corp

349 Conn Genl Life Ins. Co.

350 Dept. Health Education Welfare

351 Dir Internal Revenue Custom

352 Dir Internal Revenue 28 Hpk PI

353 Dunn and Bradstreet

354 Eastern Ace Corp.

355 Employee Corp

356 Equitable Life Assn Cashier

357 Esso

358 Fidelity Bank

359 Firms (Zones 20 and 21)

360 First Federal

361 General Motors Acceptance Corp.

362 General Elec. Credit

363 Gibbs & Co.

364 Glassip

365 Grants 5 and 10

Cumulative

Percent Percent

00.001 7.382

00.001 7. 383

00.001 7. 384

00.001 7. 385

00.001 7. 386

00.001 7. 387

00.001 7.388

00.001 7. 389

00.001 7. 390

00.001 7. 391

00.001 7. 392

00.001 7. 393

00.001 7. 394

00.001 7.395

00.001 7.396

00.001 7. 397

00.001 7. 398

00.001 7.399

00.001 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 I 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

-101-
APPENDIX F (Continued)

366 Harford Ace & Ind

367 Hecht Co.

368 Hochs child Kohn Co.

369 Home Beneficial Life Ins Co- 17

370 Home Ins. Co.

371 Household Loan

372 Hpk PI Commr of Mtr Vehls

373 Hutzler Bros.

374 Internal Revenue

375 JAGO

376 Liberty Bell Studio

377 Maryland Hospital Service

378 Maryland Unemployment Hpk PI

379 Maryland General Hospital

380 Maryland Fire Underwriters

38 1 Maryland Etching

382 Maryland Gen. Hosp.

383 May Co.

384 Md. Unemployment Compensation

385 Meed Miller Co.

386 Metropolitan Life Insurance Co.

387 Metro Life Insurance (Zone 7)

388 Metro Life Ins. Co. (Zone 14)

389 Metro Life Ins. 31 Light St.

390 Metro Life Ins. 341 Calvert St.

391 Metro Life Insurance Co. (Zone 26)

392 Metro Life Ins. 113 E Balto St.

393 Montgomery Ward 32

394 Mrs. Filberts Box 26

395 Mutual Benefit Health Ins.

396 News -Post Contest

397 Ovelmo

398 Penn Mutual Life Ins.

399 Penn Threshermens Farmers Inc.

400 Peoples Life Ins. Co.

401 Peoples Court

402 Probation Dept.

403 Proctor and Gamble

404 Ramsay Scarlett Co.

405 Real Estate Title Co.

406 Rexall Drugs (Zone 6)

407 Seaboard Steel

408 Shell Oil Box 6870

409 Shillcrafty

410 Social Security

411 Social Security

412 State Tax

-102-

Cumulative

Percent Percent

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7. 400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400

00.000 7.400
APPENDIX F (Continued)

Cumulative

Percent Percent

413 State Dept Budget Procurement 00.000 7.400

414 State Accident Fund 00.000 7.400

415 State Tax Comm 00.000 7.400

416 Stebbins Anderson 00.000 7.400

417 Stewards 00. 000 7. 400

418 Title Guarantee Co. 00. 000 7. 400

419 Traffic Court 00.000 7.400

420 Travelers Ins. Co. 00.000 7.400

421 U. S. Rubber Co. 00.000 7.400

422 Union Tiust 1226 N. Charles St. 00. 000 7. 400

423 Union News 00. 000 7. 400

424 United Clay Products Co. 00. 000 7. 400

425 Universal Finance 00. 000 7. 400

426 Universal Carloading Dist . Co. 00.000 7.400

427 .Veterans Administration 00. 000 7. 400

428 Weaver Bros. 00.000 7.400

429 Welsh Construction Co. 00. 000 7. 400

430 Westn Elec. Co. 2300 Broening Hy. 00.000 7.400

431 Wm. H. Cole & Sons 00.000 7.400

432 Workmans Compensation Comm. 00. 000 7. 400

433 WCAO Radio 00. 000 7. 400

434 C and P Phone Co. PO Boxes 00.000 7.400

-103-
APPENDIX G

Tabulation, of Estimated Percentages of the Total

Volume 'to Each Destination for Baltimore

Incoming First and Third Class Combined Mail

Cumulative

Percent Percent

001 Dept Health Education Welfare 1.285 1.285

002 Montgomery Ward 32 00. 734 2.019

003 Gas and Electric Co. 00.473 2.492

004 American Oil Co. (Box 1956) 00.451 2.943

005 Johns Hopkins U. (Zone 18) 00.324 3.267

006 Johns Hopkins Hospital 00.265 3. 532

007 Boxes (Zone 2) 00.229 3.761

008 Section 10 1381-1491 00. 196 3.957

009 Glen L. Martin 00. 171 4. 128

010 Sunpapers 00. 169 4.297

011 Dir Internal Revenue Custom 00. 162 4.459

012 Esso 00. 161 4.620

013 Section 13 1621-1717 00. 154 4. 774

014 Internal Revenue 00. 153 4.927

015 Section 4 451-598 00. 141 5.068

Q16 B & O (Zone 1) 00. 130 5. 198

017 Section 9 1231-1378 00. 129 5.327

018 Hecht Co. 00. 124 5.451

019 Hutzler Bros. 00. 123 5.574

020 Mrs. Elberts Box 26 00. 123 5.697

021 News -Post Contest 00. 123 5.820

022 USF & G Co. 00. 118 5.938

023 Black and Decker 00. 117 6.055

024 Blue Cross 00. 116 6. 171

025 Hochs child Kohn Co. 00. 116 6.287

026 Section 12 1501-1617 00. 116 6. 403

027 Commissioner Motor Vehicles 00. 114 6. 517

028 Hampden (Zone 11) 00. 114 6.631

029 Boxes (Zone 1) 00. Ill 6. 742

030 Unemployment Comp Libty St 00. 110 6.852

031 Equitable Trust Co. 00. 108 6.960

032 Union Trust Co. 00. 107 7.067

033 Section 1 1-148 00. 104 7. 171

034 Section 6 781-928 00. 103 7.274

035 Highlandtown Boxes 00. 100 7.374

036 Section 7 931-1078 00.098 7.472

037 Section 16 1935-2017 00.098 7. 570

038 Westinghouse Frdshp Airport 00.098 7. 668

039 First Natl Bank 00.092 7. 760

040 Goucher College 00.091 7.851

-104-
APPENDIX G (Continued)

Cumulative

Percent Percent

041 Section 15 1835-1917 00.090 7.941

042 University Hospital 00.090 8.031

043 Hecht Co. 00.089 8. 120 ^;

044 Sears & Roebuck Co. 00.089 8.209

045 B & O Charles & Bait Sts. 00.088 8.297

046 Bendix 00.086 8.383

047 Mercantile Safe Deposit Trust 00.086 8.469

048 Sinai Hospital 00.085 8. 554

049 Fidelity Balto National Bank 00.084 8. 638

050 Section 8 1081-1228 00.083 8.721

051 Charge It 00.082 8.803

052 Morgan College (Zone 12) 00.082 8.885

053 Social Security 00.080 8.965

054 Halethorpe (Zone 27) 00.078 9.043

055 Dundalk (Zone 22) 00.077 9. 120

056 Bethlehem Steel Co. 00.075 9. 195

057 News -Post 00.075 9.270

058 Probation Dept. 00.075 9.345

059 City Hospital 00.074 9.419

060 May Co. 00.074 9.493

061 Mercy Hospital 00.073 9.566

062 Monumental Life Ins Co. 00.071 9. 637

063 Pikesville (Zone 8) 00.071 9. 708

064 Brooklyn Boxes 00.069 9.777

065 Mathieson Chemical Co. 00.069 9.846

066 C & P Tele Co. 5 Light St -2 00.067 9.913

067 Section 14 1735-1817 00.066 9.979

068 Section 17 2035-2137 00.066 10.045

069 Marine Hospital 00.065 10. 110

070 Md. Trust Co. 00.064 10. 174

071 Provident Savings Bank 00.064 10.238

072 Section 3 301-448 00.064 10.302

073 City Tax Collector 00.063 10.365

074 Hut zler. Bros. 00.063 10.428

075 Bait Fed. Savings & Loan 00.062 10.490

076 Bon Secours Hospital 00.061 10. 551

077- Holy Trinity Fathers 00.061 10. 612

078 Hutzler Co. 00.061 10. 673

079 Section 2 151-298 00.061 10.734

080 Stewards 00.061 10. 795

081 Maryland General Hospital 00.060 10.855

082 Section 5 601-778 00.060 10.915

083 Sherwood Oil Co. 00.058 10.973

084 St. Agnes Hospital 00.057 11.030

085 Hamilton (Zone 14) 00.053 11.083

086 Lutheran Hospital (Zone 16) 00.053 11. 136

-105-
APPENDIX G (Continued)

Cumulative

Percent Percent

087 Mount Washington (Zone 9) 00.053 11. 189

088 Clifton (Zone 13) 00.051 11.240

089 Maryland Hospital Service 00.051 11.291

090 Saint Joseph Hospital 00.051 11.342

091 Union Memorial Hospital 00.051 11.393

092 Towson (Zone 4) 00.050 11.443

093 Curtis Bay Boxes 00. 048 11.491

094 Shell Oil Box 6870 00. 048 11. 539

095 Standard Oil Esso 00. 048 11. 587

096 State Teachers College 00.048 11.635

097 American Stores 00.047 11.682

098 Stewart & Co. 00. 047 11.729

099 Arlington (Zone 15) 00.046 11.775

100 Church Home Infirmary 00.046 11.821

101 Franklin Square Hospital 00.046 11.867

102 Maryland Unemployment Hpk PI 00.046 11.913

103 Raspeburg (Zone 6) 00.046 11.959

104 Westn Elec. Co. 2500 Broening Hy 00. 046 12.005

105 WBAL 00.045 12.050

106 Boxes -Towson Tertiary 00.044 12.094

107 General Motors Acceptance Corp. 00. 044 12. 138

108 Gwynn Oak (Zone 7) 00. 044 12. 182

109 Noxema Cream Co. 00. 044 12.226

110 Eastern Venetian Blind 00.043 12.269

111 Leon Levy 00.043 12.312

112 Davison 00.042 12.354

113 Hochs child Kohn Co. 00. 042 12. 396

114 McCormick Co. 00.042 12.438

115 Union Trust 1226 N Charles St. 00.042 12.480

116 C & P Telephone (Zone 4) 00.041 12. 521

117 Maryland (asuality Co. 00.041 12. 562

118 Franklin (Zone 23) 00.040 12. 602

119 Koppers Co. 00. 040 12. 642

120 Md. Unemployment Compensation 00.040 12. 682

121 Sun Life Ins. Co. 00. 040 12. 722

122 Womens Hospital- 17 00.040 12.762

123 Hochs child Kohn 00.039 12.801

124 Notre Dame (Zone 10) 00.039 12.840

125 Read Drug 00.038 12.878

126 Traffic Court 00.038 12.916

127 Essex (Zone 21) 00.037 12.953

128 Fidelity Bank 00.037 12.990

129 New Amsterdam Casualty Co. 00.037 13.027

130 Seton Institute 00.037 13.064

131 Sheppard Pratt 00.037 13. 101

132 St. Mary Seminary 00.037 13. 138

133 Johns Hopkins Medical School 00.036 13. 174

-106-
APPENDIX G (Continued)

Cumulative

Percent Percent

134 Maryland Penitentiary- 00.036 13.210

135 Spring Grove State Hospital 00.036 13.246

136 L Grief 00.035 13.281

137 Carroll (Zone 29) 00.034 13.315

138 East End (Zone 5) 00. 034 13.349

139 Fidelity and Deposit Co. 00.034 13. 383

140 Fort Howard Hospital 00.034 13.417

141 Middle River (Zone 20) 00.034 13.451

142 Roland Park (Zone 10) 00.034 13.485

143 Temple Garden Apts 00.034 13. 519

144 General Automatic 00.033 13. 552

145 Louis Marcus Co -23 00.033 13.585

146 Mercantile Trust Co. 00.033 13. 618

147 Cats Paw (Zone 30) 00.032 13. 650

148 Loyola Bldg & Loan 00.032 13. 682

149 Loyola College 00.032 13. 714

150 Rev. Lowman 00.032 13.746

151 Boxes (Zone 12) 00.031 13.777

152 Boxes (Zone 28) 00.031 13.808

153 L. A. Benson 00.031 13.839

154 Julius Gutman 00.030 13.869

155 Monumental Life Ins. Co. 00.030 13.899

156 Official General Del 33 00.030 13.929

157 Rustless 00.030 13.959

158 University Hospital 00.030 13.989

159 Wyman Park Apartments 00.030 14.019

160 WJZ 00.030 14.049

161 C & P Phone Co. Box 1471 00.029 14.078

162 May Co. 00.029 14. 107

163 Penguin Book Co. 00.029 14. 136

164 Westinghouse Electric Co. 00.029 14. 165

165 Bragers 00.028 14. 193

166 Comfy Manufacturing Co -2

00.028 14.221

167 James W. Rouse & Co. 00.028 14.249

168 Baltimore Sales Book 00.027 14.276

169 Board of Education 00.027 14.303

170 Board of Education 00.027 14.330

171 Boxes (Zone 8) 00.027 14.357

172 Catonsville (Zone 28) 00.027 14. 384

173 Druid (Zone 17) 00.027 14.411

174 Dunn and Bradstreet 00.027 14. 438

175 Govans (Zone 12) 00.027 14.465

176 Sparrows Point Boxes 00.027 14.492

177 Cary Machinery Co. 00.026 14. 518

178 Fort Howard 00.026 14. 544

179 General Electric Supply Co. 00.026 14. 570

-107-
APPENDIX G (Continued)

180 Message Center (Zone 19)

181 Metro Life Insurance (Zone 7)

182 Stebbins Anderson

183 St. Charles College

184 100 W. University-Parkway

185 I. Hamburger and Sons

186 Metropolitan Life Insurance Co.

187 South (Zone 30)

188 South Baltimore Hospital

189 Waverly Press

190 Cross and Blackwell

191 Federal Reserve Bank

192 Harry T. Campbell

193 Mount St. Agnes

194 Travelers Ins. Co.

195 Co -Oper Mills

196 C & P Phone Co. Light St.

197 Dept of Public Welfare

198 Dir Internal Revenue 28 Hpk PI

199 Firms (Zones 20 & 21)

200 Liberty Mutual Ins. Co.

20 1 State Health

202 Coast Guard Yard

203 Esplanade Apts

204. Fort Holabird

205 General Electric Co.

206 J. H. School of Hygiene

207 National Brewery No. Box Number

208 Pompeian Oil

209 State Tax

210 Workmans Compensation Comm

211 Ambassador Apts

212 Anchor Post

213 Army & Air Force Exchange

214 Commercial Credit

215 Crown, Cork and Seal Co.

216 C & P Phone Co. Box 1481

217 Davis Masury

218 I. C. Isaac Co.

219 Patterson (Zone 31)

220 Riggs Warfield Rolason

221 S & N Katz Inc.

222 Bethlehem Ship Building (Zone 30)

223 Emerson Hotel

224 Friez

225 Hampton House

226 Provident Hospital- 17

Cumulative

Percent Percent

00.026 14.596

00.026 14. 622

00.026 14. 648

00.026 14. 674

00.025 14. 699

00.025 14. 724

00.025 14. 749

00.025 14.774

00.025 14. 799

00.025 14. 824

00.024 14. 848

00.024 14.872

00.024 14.896

00.024 14. 920

00.024 14.944

00.023 14.967

00.023 14.990

00.023 15.013

00.023 15.036

00.023 15.059

00.023 15.082

00.023 15. 105

00.022 15. 127

00.022 15. 149

00.022 15. 171

00.022 15. 193

00.022 15.215

00.022 15.237

00.022 15.259

00.022 15.281

00.022 15.303

00.021 15.324

00.021 15.345

00.021 15.366

00.021 15.387

00.021 15.408

00.021 15.429

00.021 15.450

00.021 15.471

00.021 15.492

00.021 15. 513

00.021 15. 534

00.020 15. 554

00.020 15. 574

00.020 15. 594

00.020 15.614

00.020 15. 634

-108-
APPENDIX G (Continued)

227 A & P Tea Co.

228 Commercial Credit Corp

229 Elliott Mach.

230 Levinson and Klein

231 American Oil Co. (Box 507)

232 Baltimore Paint & Color

233 Cannon Shoe Company- 17

234 Catonsville National Bank

235 C & P Phone Co. , Box 1461

236 Norway Apts

237 PEMCO

238 Prudential Life Ins. Co.

239 Weaver Bros.

240 Alex Brown & Sons

241 Corkran Hill Co -2 3

242 Gunther Brewery

243 International Harvester Co.

244 Marlborough Apartments

245 Metropolitan Life Ins. Co.

246 Pittsburgh Plate Glass Co.

247 Rheem

248 State Dept. Budget Procurement

249 Veterans Administration (Zone 2)

250 Charles Antel

251 C & P Phone Co. Box 1571

252 C & P Phone Co. Box 1581

253 Emersonian Apts

254 Greenway Apts

255 Hoffberger

256 Hynson Wescott & Dunning

257 Insurance Co. of North America

258 NY Life Ins. Co.

259 State Roads Comm.

260 Stella Maris

261 Student Det Enlisted

262 Van Sant Dugdale Co.

263 Arundel Corp.

264 B & O Camden Station

265 Chevrolet

266 Homewood Apts

267 Hopkins Apts

268 Lord Baltimore Hotel

269 Mrs. Filbert Margarine Co.

270 Pennsylvania Produce Terminal

271 Peoples Life Ins Co.

272 2nd National Bank

Cumulative

Percent Percent

00.019 15.653

00.019 15.672

00.019 15. 691

00.019 15.710

00.018 15. 728

00.018 15. 746

00.018 15.764

00.018 15.782

00.018 15.800

00.018 15.818

00.018 15.836

00.018 15.854

00.018 15.872

00.017 15.889

00,017 15.906

00.017 15.923

00.017 15.940

00.017 15.957

00.017 15.974

00.017 15.991

00.017 16.008

00.017 16.025

00.017 16.042

00.016 16.058

00.016 16.074

00.016 16.090

00.016 16. 106

00.016 16. 122

00.016 16. 138

00.016 16. 154

00.016 16. 170

00.016 16. 186

00.016 16.202

00.016 16.218

00.016 16.234

00.016 16.250

00.015 16.265

00.015 16.280

00.015 16.295

00.015 16.310

00.015 16.325

00.015 16. 340

00.015 16.355

00.015 16.370

00.015 16.385

00.014 16.399

-109-
APPENDIX G (Continued)

273 Baltimore Transit

274 Enoch Pratt Library

275 Notre Dame Novitiate

276 Peoples Court

277 Receipe Food Inc.

278 Schenuit

279 Westinghouse (Zone 23)

280 Alexander and Alexander

281 American Can Co.

282 Amer. Smelting and Refining Co.

283 Eastern Ace Corp

284 Hedwin

285 Home for Incurables

286 Maryland Cup

287 Police Dept.

288 Sparrows Pt. Solids

289 Whitaker Paper Co.

290 1452 -Md. -Training School

291 American Standard Radiator

292 Balmar

293 Bait Transfer

294 Bendix (Zone 9)

295 Calvert Fire Insurance

296 Cambridge Arms Apt.

297 C & P Phone Co. Box 1541

298 Drumcliff Burkleigh Kirkley

299 English-American Tailors

300 Gray Bar Electric Supply Co.

30 1 Hpk PI Commr of Mtr Vehls

302 Langenfelter

303 Metro Life Ins. Co. (Zone 14)

304 N. Hess & Sons

305 Ovelmo

306 Probation Dept.

307 Social Security

308 Student Det. Officers

309 Walbrook-16

310 American Bank Stationary Co.

311 American Totalicator

312 Barton Cotton Co.

313 Continental Can Co- 13

314 Curtis Bay (Zone 26)

315 Emerson Drug

316 Highlandtown (Zone 24)

317 Home Ins. Co.

318 Lasting Products Co.

Cumulative

Percent Percent

00.014 16.413

00.014 16.427

00.014 16.441

00.014 16.455

00.014 16.469

00.014 16.483

00.014 16.497

00.013 16. 510

00.013 16. 523

00.013 16. 536

00.013 16. 549

00.013 16. 562

00.013 16. 575

00.013 16. 588

00.013 16.601

00.013 16. 614

00.013 16. 627

00.012 16. 639

00.012 16.651

00.012 16.663

00.012 16. 675

00.012 16. 687

00.012 16. 699

00.012 16. 711

00.012 16. 723

00.012 16.735

00.012 16.747

00.012 16.759

00.012 16.771

00.012 16. 783

00.012 16.795

00.012 16.807

00.012 16.819

00.012 16.831

00.012 16.843

00.012 16.855

00. 012 16.867

00.011 16.878

00.011 16.889

00.011 16.900

00.011 16.911

00.011 16.922

00.011 16.933

00.011 16.944

00.011 16.955

00.011 16.966

-110-
APPENDIX G (Continued)

Cumulative

Maryland General Hospital

Percent

00.011

Percent

319 16.977

320 Murray Corp 00.011 16.988

321 M. Shaivitz 00.011 16.999

322 Peoples Bank 00.011 17.010

323 South Station Boxes (Zone 30) 00.011 17.021

324 State Accident Fund 00.011 17.032

325 Towson National Bank 00.011 17.043

326 Warrenton Apts. 00.011 17.054

327 Zamoiski, Jos. M. 00.011 17.065

328 Brooklyn (Zone 25) 00.010 17.075

329 Butler Bros. 00.010 17.085

330 Continental Can Co. 00.010 17.095

331 C & P Phone Co. Box 1591 00.010 17. 105

332 C. D. Kenny Co. 00.010 17. 115

333 Greenspring Dairy 00.010 17. 125

334 Loyola High S. 00.010 17. 135

335 Standard Oil 00.010 17. 145

336 Stein Bros, and Boyce 00.010 17. 155

337 Triumph 00.010 17. 165

338 US Veterans Hosp 00.010 17. 175

339 Western Maryland RR 00.010 17. 185

340 WFBR 00.010 17. 195

341 Blums Inc. 00.009 17.204

342 C & P Phone Co. , St. Paul St. 00.009 17.213

343 Headquarters & Hdqtrs Co. 00.009 17.222

344 John Hancock Ins Co. 00.009 17.231

345 Maryland Paper 00.009 17.240

346 Metro Life Ins 31 Light St 00.009 17.249

347 Moses Kahn and Sons 00.009 17.258

348 Shofer Furn 00.009 17.267

349 Southern Hotel 00.009 17.276

350 Armco Drainage 00.008 17.284

351 Baltimore City Jail 00.008 17.292

352 Baltimore Life Insurance Co. 00.008 17.300

353 Bunting Chemical Co. 00.008 17.308

354 Calvert Drug 00.008 17.316

355 Clerk of Court 00.008 17. 324

356 Coca Cola 00.008 17.332

357 C & P Phone Co. Box 1511 00.008 17. 340

358 Home Mutual Insl Co. 00.008 17. 348

359 Penn Threshermens Farmers Inc. 00.008 17. 356

360 Peterson Howell and Heather 00. 008 17.364

361 State Dept of Educators 00.008 17.372

362 State Police (Zone 8) 00.008 17. 380

363 Weiskettle 00.008 17. 388

364 Western Auto 00.008 17.396

-111-
APPENDIX G (Continued)

Cumulative

Percent Percent

365 WCAO Radio 00.008 17.404

366 Afro American 00.007 17.411

367 Blackstone Apts 00.007 17.418

368 Boxes-Firms A-L 00.007 17.425

369 Castlebergs 00.007 17.432

370 General Adj Bur. 00.007 17.439

371 Immaculate Conception 00.007 17.446

372 Md Lumber Co. , 300 N. Warwick Ave .00.007 17.453

373 Proctor and Gamble 00.007 17.460

374 Rices Bakery 00.007 17.467

375 Rubberoid Co. 00.007 17.474

376 Ruckert Term Corp. 00.007 17.481

377 S. Schapiro 00.007 17.488

378 Veterans Administration 00.007 17.495

379 Welsh Construction Co. 00.007 17.502

380 W. T. Cowan 00.007 17.509

381 Allied Ins. Co. 00.006 17. 515

382 Allstate Ins. Co. 00.006 17. 521

383 American Credit 00.006 17. 527

384 Arcrods 00.006 17.533

385 AA Chemical Co. 00.006 17. 539

386 Baugh & Sons Co. 00.006 17.545

387 Bull SS Co. 00. 006 17.551

388 B & O Lombard & Libty Sts. 00.006 17.557

389 B & O (Zone 23) 00.006 17. 563

390 C & P Phone Co. Box 1521 00.006 17.569

391 Dept of Health 00.006 17. 575

392 Englander Co. 330 Warwick Ave. 00.006 17. 581

393 Equitable Life Assn Cashier 00.006 17.587

394 Eutaw Savings Bank 00.006 17. 593

395 Friendship Internl Airport 00.006 17.599

396 General Motors Parts Div. 00.006 17.605

397 John Deere Plow Co. 00.006 17.611

398 Josephite Fathers 00.006 17.617

399 Koinonia Foundation 00.006 17.623

400 Liberty Bell Studio 00.006 17. 629

401 Maryland Fire Underwriters 00.006 17. 635

402 Schleisner Co. 00.006 17. 641

403 Swindell Glass 00.006 17. 647

404 US Rubber Co. 00.006 17. 653

405 W. A. Taylor 00.006 17. 659

406 Associate Loan 00.005 17.664

407 Boxes (Firms M-Z) 00.005 17.669

408 Dept of Employees Security 00.005 17. 674

409 Equitable Life Ins. Co. 00.005 17.679

410 Fridgidare Corp 00.005 17. 684

411 Hammond Tax Collector 00.005 17. 689

-112-
APPENDIX G (Continued)

Cumulative

Percent Percent

412 Home Beneficial Life Ins. Co- 17 00.005 17.694

413 Household Loan 00.005 17. 699

414 J. J. Hains 00.005 17.704

415 Maryland Match 00.005 17.709

416 Monumental Life Ins. Co. 00.005 17.714

417 Official (Zone 2) 00.005 17.719

418 Rivera Apartments -17 00.005 17.724

419 Sharp and Dohme 00.005 17.729

420 Shillcrafty 00.005 17.734

421 Sun Life Ins. Co. of Canada 00.005 17.739

422 Universal Finance 00.005 17.744

423 A. L. Mathias 00.004 17.748

424 Boston Old Colony Ins. Co. 00.004 17.752

425 Grants 5 & 10 00.004 17.756

426 Howard Crook Co. 00.004 17.760

427 Ingram Hall 00.004 17.764

428 International Harvester 00.004 17.768

429 Maryland Bakery 00.004 17.772

430 Meed Miller Co. 00.004 17. 776

431 Metro Life Ins. , 341 Calvert St. 00.004 17.780

432 Monumental Life Insurance Co. 00.004 17.784

433 Nationwide Adjust 5405 York 00.004 17. 788

434 Ramsay Scarlett Co. 00.004 17.792

435 Reliable Stores 00.004 17.796

436 Seaboard Steel 00.004 17.800

437 United Clay Products Co. 00.004 17.804

438 U. S . Printing Litho 00.004 17.808

439 American Ice Co. 00.003 17.811

440 Baltimore County Police 00.003 17.814

441 Central Records Facilities 00.003 17.817

442 Conn Genl Life Ins. Co. 00.003 17.820

443 C. C. Lang Co. 00.003 17.823

444 Home Utilities 00.003 17.826

445 McCardle and Walsh 00.003 17.829

446 Princess Shopp-23 00.003 17.832

447 Seaboard Bros. 00.003 17.835

448 Southern Jobbing Co. 00.003 17.838

449 Thompson Trailer 00.003 17.841

450 Union News 00.003 17.844

451 Universal Carloading Dist. Co. 00.003 17.847

452 U. S. Ind. Chemical 00.003 17.850

453 Whiting Turner 00.003 17.853

454 Woodholme Country Club 00.003 17.856

455 Collector of Customs 00.002 17.858

456 C & P Phone Co. , Box 1491 00.002 17.860

457 Glassip 00.002 17.862

-113-
APPENDIX G (Continued)

458 Gulf Oil Co.

459 JAGO

460 Mutual Benefit Health Ins.

461 Real Estate Title Co.

462 Rexall Drugs (Zone 6)

463 Socony Vac Oil Co.

464 Swift & Co.

465 Title Guarantee Co.

466 Westn Elec. Co. 2300 Broening Hy

467 Amer. Oil Co.

468 Brunning Bros.

469 First Federal

470 Maryland Etching

471 Maryland Hospital Service

472 Metro Life Insurance Co (Zone 26)

473 Penn Mutual Life Ins.

474 Robert and Heard

475 Amer Mutual

476 Baumgartner Downing

477 Employee Corp.

478 General Elec Credit

479 Gibbs and Co.

480 Harford" Ace & Ind

481 LifeGTasualty Ins. Co.

482 Maryland Gen. Hosp.

483 Metro Life Ins. 113 E. Balto St.

484 Nationwide Adjust 5106 York

485 State Tax Comm.

486 Union Trust

487 Wm. H. Cole & Sons

Cumulative

Percent Percent

00.002 17.864

00.002 17.866

00.002 17.868

00.002 17.870

00.002 17.872

00.002 17.874

00.002 17.876

00.002 17.878

00.002 17.880

00.001 17.881

00.001 17.882

00.001 17.883

00.001 17.884

00.001 17.885

00.001 17.886

00.001 17.887

00.001 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

00.000 17.888

US COMM - DC - 53127

-114-
U.S. DEPARTMENT OF COMMERCE

Frederick H. Mueller, Secretary NATIONAL BUREAU OF STANDARDS

A. V. Astin. Director THE NATIONAL BUREAU OF STANDARDS

The scope of activities of the National Bureau of Standards at its major laboratories in Washington, D.C., and

Boulder, Colorado, is suggested in the following listing of the divisions and sections engaged in technical work.

In general, each section carries out specialized research, development, and engineering in the field indicated hv

its title. A brief description of the activities, and of the resultant publications, appears on the inside of the front cover. WASHINGTON, D.C.

Electricity and Electronics. Resistance and Reactance. Electron Devices. Electrical Instruments. Magnetic Measurements. Dielectrics. Engineering Electronics. Electronic Instrumentation. Electrochemistry.

Optics and Metrology. Photometry and Colorimetry. Photographic Technology. Length. Engineering

Metrology.

Heat. Temperature Physics. Thermodynamics. Cryogenic Physics. Rheology. Molecular Kinetics. Free

Radicals Research. Atomic and Radiation Physics. Spectroscopy. Radiometry. Mass Spectrometry. Solid State Physics. Electron Physics. Atomic Physics. Neutron Physics. Radiation Theory. Radioactivity. X-rays. High

Energy Radiation. Nucleonic Instrumentation. Radiological Equipment.

Chemistry. Organic Coatings. Surface Chemistry. Organic Chemistry. Analytical Chemistry. Inorganic

Chemistry. Electrodeposition. Molecular Structure and Properties of Cases. Physical Chemistry. Thermochemistry. Spectrochemistry. Pure Substances.

Mechanics. Sound. Mechanical Instruments. Fluid Mechanics. Engineering Mechanics. Mass and Scale. Capacity, Density, and Fluid Meters. Combustion Controls.

Organic and Fibrous Materials. Rubber. Textiles. Paper. Leather. Testing and Specifications. Poly- mer Structure. Plastics. Dental Research.

Metallurgy. Thermal Metallurgy. Chemical Metallurgy. Mechanical Metallurgy. Corrosion. Metal

Physics.

Mineral Products. Engineering Ceramics. Glass. Refractories. Enameled Metals. Constitution and Micrestructure.

Building Technology. Structural Engineering. Fire Protection. Air Conditioning, Heating, and Refrigeration. Floor, Roof, and Wall Coverings. Codes and Safety Standards. Heat Transfer. Concreting Materials.

Applied Mathematics. Numerical Analysis. Computation. Statistical Engineering. Mathematical Physics.

Data Processing Systems. SEAC Engineering Group. Components and Techniques. Digital Circuitry.

Digital Systems. Analog Systems. Application Engineering.

• Office of Basic Instrumentation. • Office of Weights and Measures. BOULDER, COLORADO

Cryogenic Engineering. Cryogenic Equipment. Cryogenic Processes. Properties of Materials. Gas Liquefaction. Radio Propagation Physics. Upper Atmosphere Research. Ionospheric Research. Regular Propagation

Services. Sim-Earth Relationships. VHF Research. Radio Warning Services. Airglow and Aurora. Radio

Astronomy and Arctic Propagation.

Radio Propagation Engineering. Data Reduction Instrumentation. Modulation Research. Radio Noise. Tropospheric Measurements. Tropospheric Analysis. Propagation Obstacles Engineering. Radi

ology. Lower Atmosphere Physics.

Radio Standards. High Frequency Electrical Standards. Radio Broadcast High ! pedance Standards. Electronic Calibration Center. Microwave Physics. Mi< Radio Communication and Systems. Low Frequency and Very Lo quency and Very High Frequency Research. Ultra High Frequency and Super 1 1 i tion Research. Antenna Research-. Navigation Systems. Systems Analysis.