) 

·--~ _· .. . ·. . (.) REF ID:A41488~ SUBJ~CT: Cipher 'Prd.ntins---~-J"°egraph System. ~Z.,.~~ /;k-.~r~r 0.f~~,/ ,, A'MERICAN TELEPHONE AND TELEGRAPH COMPANY:,.., _,_,- ... ----· 

DEPARTMENT OF DEVELOPMENT ANO RESEARCH 

JOHN J CAR1''1' TELEPHONE AND TELEGRAPH BUILDING 

VICE PRESIDENT 

LYMAN F MOREHOUSE _ 195 BROADWAY EQUIPMENT OEVELOPME.NT ENGINEER 

FREDERICK L RHODES OUTSIDE PL.ANT DEVELOPMENT ENGINEER 

OTTO B BLACKWELL TRANSMISSION OE.VEL.OPMENT ENGINEER NEwYoRK June24, 1920. HOWARD 5 WARREN ELCCTR\C.AL INTERFERENCE. ENGINEER 

GEORGE A CAMPBELL RESEARCH P:NGINEER 

I.ieut. Col. J. -o~- Ma.uhorgne, 

United Stat es ArF.iy, , Care of Chief Signal Officer, 

Washington, D. C_. 

My dear Colonel Mauborgne: 

As agreed in our conference when you were in New 

York, I ar.i. sendirig you two cipher telegra.r.is which we have pre -

pared merely to illustrate the oethod of enciphering messages 

in prir:ted form for transmission by telegraph or cable, and also 

to test the ability of th~ Co!llmercial Telegraph Companies to 

handle such messages without error. one copy of ea.ch telegram 

will be sent by western Union a.nd another copy by Postal Telegraph. These messages were enciphered by the machine and 

printed directly on the telegram blanks. 

In these messages no attempt has been m~de to encipher the key indi en.tors; but to avoid having numbers appear 

in the cipher telegram, the letters A to J have been used to 

designate the numbers 1 to O respectively, e. g. in message 

No. 1 key tapes settings are 240 and 096 and these settings 

are designated by the key indicators BDJJIF. In the second 

message the settings are 366 and 222 which are designated by the 

letters CFFBBB. The key indicators are also repeated at the end 

of each message. 

@'pp roved for Release by NSA on 11-18-2014 pursuantto E .0. 1352~ :·» 
.. .I 

' 

REF ID:A4i4885~ I 

Lieut·. Gol. Mauborgne. -2-

The body of the message begins directly after the 

six key indi.cators. To decipher e&ch message it should first 

be perforated exactly ae 1 written, except th~t the spaces between 

' 

five letter groups should be omitted, and whenever the letter "E" 

occurs, it should be combined with the letter following it, and 

punched according to the following table. 

EL. 

EH~ 

EO 

EK 

EJ 

ET 

EZ 

Line leed 

/Spa;ce 1 

- -- Carriage return ~ 

Letter shift 

Fi gu're s hi ft 

Blank tape 

Letter "E" 

At the end of the message, blank tape signals ;(ET) 

have been added to completely fill out one of the five letter 

groups. 

I should be glad to be advised if you experience any 

difficulty in deciphering these meese.ges. 

Under eep~r~te cover: 

Two key tapes" 

GSV:LGH 

Yours truly, 

/ l 

~ 

Equipment 

7---

Development ~ Engineer. 
Q a 

Engineering 

a.111 Beseareh 

REF ID:A414885 

WAR OEPARTMENT 

OFFICE OF THE CHIEF SIGNAL OFFICER 

WASHINGTON 

2 July, 1920 

. 'I ' ~ ) '~- (" !9?C 

J.1y dear Mr. llorehouse: 

' ,, ... _ ... 

Hereo:!ith find. the co:;}ies of the 

mass~::gas as deoi:poored on our printer. I suppose 

that by this t!r.:e you ha.ve noted the me.:::~ag-en we 

sent you ae a nicht letter s averaJ. da~ aao, and 

perhaps ~u. ha.ve run across st ill t'u.rth&r Chances. 

Thoee whioh oocu:rNd between New York City and 

\'7ash1nston oau.sed us no d1ff1Cult1 e.t all as you 

can see from the enclosed. 

Llr. L. F" Uorehouoo, 

c/o A. T. aid T.· Oot!pOlly, 

196 Broadway• 

N01.'1 Yol»k City• 

2 ooclso 

sincerely yours, 

/ 

I 
_CLASS OF SERVICE SYMBOL 

• Day M'easa;e 

Day Letter Blue 

Night M88811,Q1 Niie 

Night Lett~ N L 

II none or l~e1e three symbol• GPneani after the check (number of words)thls lsadaymessase. Other- wi~e its character Is lmhcated by the 

eyrnbol appelll'ing after the check. 

Afl.J.,.N. ~.,. 

NEWCOMB CARLTON. "RESIDENT GEORGIE • ATKINS. FIRST VICE·PR!WIDENT 

RECEIVED AT COMMERCIAL NAT'l BANK BLDG., 14th l 6 STS., N. W. WASHINGTO , 0. C. A~V:t~·s" {,._,.., ' !/ \ 

c \/ ~A 1 

65NY' 34 ... EXTRA1 RUSH K --:· 

r 

LT COL J 0 WAU.BORGNE 

BNKJH NYETB DJJIF 

1 F tvJOHEHOUSE. 

/ 

CLAS!! OF SERVICE SYMBOL 

Day Message 

Day Letter 

Night Message 

Night Letter 

Blue 

Nita 

NL 

II none of these threo symbols 

appears alter the check (number of 

words)thls Is a day message. Otha,.. 

wise Its character Is indk:ated by the 

symbol appearing after the check. 
Thia t. a ful na11 Te'le,ram unleaa ollwr111lu lntlkaled 6" el11nal oller llw number of U10rde :-''.!!:.!:;'' (Nl11hl £elfer11ram) or·~· (Nishi Teles ram) II 1&-50887 

·-· 

269NYTQ 33 1136A 

NY NEWYORK JJNE 26 

LT COL J 0 MAUBORGNE 

.· :'~45 

/ . l . US ARMY-'CARE OF CHIEF SIGNAL OFFICER WASHN OC 

BDJJI . t/. - - FQYAP EOJGP PJNIY·· EK·VKY-· ,, IXBXI ZACKO EZIJC.PEJlP CABXI 

TlXDK AOQCC OUZXE Kueax VOEHE - .. TZGNE TKETY HEJEH - AXOEK HVIBE 

KUEHE LVRET IMETP WAFXE-LMHGI: ETAEJ FEHEJ USEOL HDHJE ZELEZ 

THLYM SNK4H NYETB OJJIF 

L F MOREHOUSE 
Qe C 0 

C Pe 

!? 0 

c PO 

(OP 

0 PO 0 -~ - ,-.,,-.,. 

c:..-"oo OPO~ 

QC &l'>l._' 

0L P~·-

0 c:;.', 

Pi:-JOC ~ .... - ... 

OP 0 (_ 

0 (, 

00L0 

c p 0 

oo 

0 co 

0 '- 0 p 0 

oo oc 0' 

":' 0 l 

oo 0 

c oo 

c c 0 

( ( p 0 

PO 

c p 0 

9 !? 

PPC 

c 0 ( 

-Q P PC 

C eQP 

e QC 

<!' (· 

Pe C 

ece 

eee 

er ee 

piop 

e ec 

~ i? 

P e P9 

l 

c \'.' c 

f p c 

c t cc 

cc 

C t CG 

e GC 

[ c 

e e c f' 

E' c ~ 

( ~ Q( 

E ( 

, •D' ~P\. : 

L~ 0 

Ccc ·'--. <"i e 8'.:- I 

C .> e (,)- ~ 

eQ 

ceEe € (_ 

c e 

eeeecc, 

c f 

c 

c e 

0 c 

ccc 

e < c c 

cc e c cc 

c c ce 

eecc 

eec c e e c c e 

c c c c e 

ccc c 

cc 

e c c c- cc , e cc c c (_ 

e O r e O 

QQeCQQ 

QQ 

9 c e g 

CGe G(,g 

" G Q°C'-e--.(' 

cc e ce !?\._, 

QC<!' 

C'QG( lC 

oc 19 c 

c " ( @ 

c 19 <S;l (Sl 

(_ (I:)" c ISl 

il:lC" C<S> 

(', (9 

<D C\l <P (l l0(9 

0 (9 

Cll Cll 0 c (SI 

Co C 0 (1l( 

(.\! C• (~ (1l 

( ( C• (_ 

G· c 

cc (_l 

cc 

c rt c c 2 Q) 

IL c 

c C' c 

c 0 c 

C-C-c-v 

Q c Q 

• c t 

L C c l C L 

0 0 

[ C Q L L 

IL c 

c Q u I 

ILOOQOC 

<LOcQ ~ 

c Q 

. c c Cl c 

ace co 

cQ 

a cc oc o 

acco o 

-Geo co 

OCc 

,,ace co 

occ c c c c c c 

~~ L£ 

~.,~~ 

\_ 

c~--~ c l~ c (_ 

c c 

(_ 

REF ID:A414BB5B 

r 
( 0 b 

( 0 0 

0 Of> 0 

Ob( e bC 

OOb C 

C b 6 Ol 

c l" 0 

( " 0 

e Co 

OC e C 

OO<lOO 

Ce oc 

" c_ Ce l 

0 t>OC 

oc Cl ( 

c_ 0 !O( 

( 0 () (, c 

0 '° c_ 0 ()(_ 

O'. <ll 0 <!)cc 

cc 0 c 

V'. 0 <ll l 

ro rt c_ 

l e 

ei "' cc 0 'll 

0 " 

cc "'l ti ~oc 

CC e c eiece 

iQl(JeC 

()( ICC 

c Q c 

C r,fOC 

c r;; 0 

C 0Gc C 

iolOC c GC 

iQQ<QC 

cc Q 6 

IQ<;( 

coora 6 

cc c Q l 

( ( G 

e.;; Q 

c 0 c (: e o c 

IOC" Q 

cc,.,c·e 

"' c c"' 6 

c 06 

cc 6 cl ~e -, 

'-' .. ~ 

cc

1

c" c 

CC e C0Cd::; o c;c , c 0. 

CCo•C 

6 <: 5 

cc c c 

CC6c(C 

6 c E. b 

( ( 

' ( -c>G C-< c c o·C 

0 

c c £"· 

CG Cc 0 

c Coe 

c cc c c ( ( 

(_,( c c l (, c c c 

cc 

c0cc 

(1 cc 

( 0 cc 

( cc 

0 

oCC 

C Cr c CC' 

( (, c c 

(, (, 

G Ci G CrC 

(, 0 co 

Ge C 

c G: c Cr 

C Co 

c c 0 

u (, 0 

c 

c 

c 

(J 

(J c cc 

0 c 0 Ci 

0 c 0 

co G (r 

co c 

C (I,r, c 

CCI c 'J (I C 

Cr C< c C C 

(I a CJ, ( 

a (< 0 

c 0 c 

c (IC c 

\. 

REF ID:A414BB5B 

J 

'- _) 
REF ID:A414BB5a9 

CLASS OF SERVICE SYMBOL 

Day Me1mge UNION CL.ASS OF SERVICE SYMBOL 

DQM111111 ....-- Day Lotter Blue Day Lotter Blue 

Night Meoaage Nlto Night M1BS&g1 Niie 

I Night Letter NL 

II none of these three symbols appean alter the check (number af 

wonla)thlalndaymessage. Otherwl11 Its oll-tor ls Indicated by Ille o:rmbol 1111p-lng alter the olleck. 

!' Night Letter NL 

II none of tlll!$e three symbols 

IPP"""' alter the check (number ol word1)thl1 Is a day message. Other-

-

~ 

Ila ollaracter ls Indicated by the appearing alter the check. 

AM 7 NEWCOMB CARLTON. PRESIDKNT GEORGE W. E. ATKINS; .. IRllT YICIM•RESIDllNT 

,,_. 

• RECEIVED AT COMMERCIAL NAT'L BANK BLOS., 14th & 6 STS., N. W. WASHINSTON, O. C. A~';;~s ( "\ r ~ \ l 1 

l ..J 

r • 

,, -

J.299NY 25 l 3XTRf_ RUSH ' .-; .. 

DA NTv'!YORK NY 100 2~l 25 

i-:; ~ o·' 

;yv··· 

LT COL J 0 ~:LA UBORGI{l'."' t; '--J 

· US ARNY CAR~ OF CHIT.:F SIGNJ.L OFFICTR 

: !__/ -r ,.. ;. ' ._, ' _ ... - ,;..., c: • 

CFFBB BBXDI:l ::K..\S.f .. TIU.~ BLV JU oo:;rr~- LITOJ.: 

WASHINGTON DC 

j/V Ll r. '7'7,J.. ~ .. • ·"R ·r' uy ""'-- ~·,.;• .. a 

\, 

DKXJ 1iA 

AXQ:T LD. 

. ::m.1 FGO_ -

~ TJ"DHR SNSRI X~JYD l!:JD~L LCG])";: TTR~~~ LO~~ r.,;./ .............. 

. ~-

0 IillSl1J :SLFTN :XfTI'C FFBBB 

L F 110BIBOUS3'.. 

I•"-

' \ 
Tlaia le a./'CIN Da'I/ Teh:11ram unleu ollum1>ue Indicated 611 ol11nal after the number of UJOrda:-''!!:.!:;" (Night £etter11ram) or''!:!!!!'" (Ni1ht Telearom) I 

267NY TQ 1130A 24 

NY NEV/YORK ~NE 25 

LIEUT COL J 0 MAURGNE 

US ARMY 

.:tt-Z :-"; --:.-

CFFBB BBXCM -~KASA TILIH BLVJU 

AXGET LOEOM FGOCE TJEHH SNSRI -- ....... 

KSSEJ ELPlN XETEC FFBBB 

0 ,,_ 

' 

CARE CHIEF SIGNAL OFFICER'WASHN DC 

II OOEKE LJEOE ZZZAE,~HY OKXMA - --::-- ~ \~ "., . 

XEJYO MJDEL LCGOE -T-TREK LQEJE - - - - -· ~ ------ - ,;-. -...... -~ 

L F MOREHOUSE 

•.o 

N 

0 

t;-) ::--! - .... 7 

:;: =·~ ,--cI o '", 

" -, 

0 

rn / 1 j::f- I --- I I / 

18-50887 

~r 

~ 
' 

''-'• p ;;. 

. 

•J ' 

/ 

iA2V/ 24 

NEWYORK NY 25 I} 

. I.'. I E U T C 0 L : J 0 fl', A U'B 0 R G N E 

US ARMY ·CARE CHl·EF° SIGNAL OFFICER WASHINGTON DC 

OF-F'BB. \rH IS~AMPLErESSAGEj1sfPR INTEDIYllTHOU[jsPA·c~s\! o\nE CREA_SE~HE\NUMBER\oFJwoRns\ 

II N\r H e;\c I p H E Rr EL E GR AM \ -

I { '\](- . L F M 0 REH OU s E 

fo\ 3 lf 

' 1' I -

I • 

l ' 

I 

I 

I ' I 
, REF ID:A4.14BB5B. 

• i 

,. A"-1 34 1 1 EXTRA RUSH 

DA NEWYORK NV 1 10('2A 25 

, .LT COL '.J .o MAUBORGNE / 

U ·S ARMY CARE OF CHIEF SI GNAL,.OFFI CER WASH l<NGTON DC 

B DJ J I f'1 WESS AG ES CAN BE_ RAP I DL Y AN D A CCU RATEL Y EN C I P HERE< D A

1 ND DE CI PH ERE D ' li\ 

MEANS dF THE 'AT & "." CIPHER PR INTl1NG TELEGRAPH SYSTEM 

~ ...?-/ 

L F MOREHOUSE I 

• ~-L-L- ]J I 

/{ .;-- I 
0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

0 0 

~~ 

~~~ g~~~ '~00 00 oOO 

0 ~:)O 

OOC\:100 

0 .ooo 

oo 

00 oOO 

0 oOO 

0 oO 

000000 

oo 

ooo 0 0 

0 ooo 

0 oo 0 

00 0 

O oO 

00000 

oo 

ooo 

0 Oo 0 

co 

00 oOO 

0 coo 

0 0 

000000 

0 c 0 0 

oo 

000000 

0 oO 

ooo 

0 0 

0000 

0 0 

oo 

ooco 

00 c 10 q-a 

I ',) O~o[\ 

oo 

oo 0 Oo 

oooc 

< c,""") O o\.,_) 

00 0 0 

00 0 

O oO 

00 oO 

ooo 0 0 

0 0 

c c 

co 

C·-:-CcCO ~ oc . oo 

oc 

oc 

QcOO 

oc 0 

cc 

oCC 

0 0 c 

cooo 

~ ea: o e~ 

eS<JC 

"o;: c 0 c 

0 c 

co 

cooc 

IL' o o I OoC 

I o c 

I coo c I CO 

I Co 0 p1 (t 0 0 

P\oo o o 

0 ooo 1

8\o ~gc ol o o I C·C 0 

081 coo 0 10 tCo 0 f

) ~ :~~:o cc 

D c 00 

od c l[JO 

oa oc o 

oiC Oc 

01 oo<r 

o<r <r>oc ,.. qcco oQ) 

o I c o O<!'> o Cl·C c 

0 ©o 

(!J c 0 

0 ·CD<DoO 

CD o 

a. c 

crO 

0 ~-o<:O ooo:J 

0 oco 0 

06"-c Go ci 

Ol c:G o~O - oc c ~o 

·~ •QCOo 0 

G o 0 

OO<D o OOQJoC'C 

cOC 

Q; 0 I[• 

c 0() 

0 0 

ooo 

0 eo 

oOO 

(!) etc 

mo c b 

C crO 

oococ 

0 a 00 

OoO:J 

00 0 

cc 0 

(j.(j)Q:, 0 oc 

co 

a ~aQ: 

() " 

G 0 

0 0 0 

c 0 0 

cCO 

REF ID:A414BB5B 1 1 
• 

• 

• 

• 

• 

• 

• 

• • ••• 

• • • •••• •• • •••• •• • • • • • • • 

• 

• • •• ••• • •• • •• •••••• ••• •• •••• • • • • •••••• •• • 

• • 

• • • • •• •• •••• • • • •• • • • ••• • •••• • • • • •• • ••• •• • • ••• ••• 

. 

• • • '•.