• •,,. 

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. '•. 

... · ... .... .. . ·.··i 

'·. ... :· ...... ' ' 

' ' I ,- ' 1 .. '. .. i i ,... I J '- .. -, 

'~ ... , •• 'o I : :a. :.· I 

'· ' 

·.: ·. =·. ,• · i' .Febtuary· 1~54 '," t-1601 

.. o I ,' ~ '•• I 

·, ... 

. .. : '' 1' I ,, 

··.· .. : 

.. -.... • •• • •• -.·· • .r 

Director, NSA . . . · .. National Security,Agen<?Y' 

3801 Nebraska Avenue · · 

Washingtp~. ,~5 1 D. C.- ··., · 

Attention:· . Mr. ·w~ F~ :Freedman 1 o o I 1 '. I 

.near st~~:·:·:·.:··,,·, . 

·. ' . =·. ~· . .... 

r- ... :.• ,· • - ..• ~.: -··· 

- . "' - . 

,,. 

· Enclosed· a~~ the' RAND' data ·~dicated ·beio~. "return~· copy or this let~er to acknowledge 

classified material. 

Please sign.and 

receipt' of the 

We wish tQ call your atten~ion to the fact that RAND Research 

Memoranda '(RM.'s) are wo'rk:ing papers. ·Because they· may b'e· 

expanded,· piodi_fied, o.r withdrawn a.t any time, pend.ssion to 

,quote or reproduce these data must be obtained ~rom·RAND. I I I I I o I o I I ,'• I o 

• o I I 

. _ Very truly yours, 

i-' .. .,, ',.I ,., 

I' '• 

. ·THE RAND CORPORATION 

v. B. Von Senn 

Publications 

,RECEIVED FROM THE RAND CORPoRATION RM-11.3.9~ COPY NO. 1.34. 

Declassified and approved for release bJ: NSA on 04-01-2014 pursuantto E.O. 1352a . '• . . . · .. ,·. ·.. . ·.. . 

VBY:es' 

. . .. .. ' -----------~~------~--------- ... 

. ·; .. .. I,• 

<::"_:_. - ' .. 

Date _ ..... <? ...... -_~ ........ ·_..._,-_..._. -~-~----

.' 

. . 

SEC RE·T . ·. 

IF ENCLOSURES ARE WITHDRAWN OR NOT ATTACHED THE 

. ·CLASSIFICATION Of THIS CORRESPONDENCE WILL BE 

~ANCELLED IN ACCORDANCE WITH PAR. 25E AFR 205·1 • 

. . · NQTICE-Thl1 materlal contain• Information affecting the natlonal defense of the United Slates within the meaning of the •1Plon111e laWI ntr. 18 u S C:. 

rc11an1 793 and 79"4, the tran1ml11lon or revelallon of which "' any manner to an unauthorized pen11n 11 prohibited' by law. • • • • 
. ~ 

. ·· .. 

•• 

.RJlnD .. 

•' 

~i..Q;.~69953 •. 

~~bftCI I . 

SE~URHY IN~ORMAllON 

27 October 1953 

. Director, National· Security.Agency 

3801 Nebraska Avenue · · 

Washingto~·25, D. C. 

Attention: Mr. ·William·F. Friedman . 

Dear.Sir: •'' ........ ·. ': 

L-14088 

I am ask~ ·that the· enclos'ed .. RA:ND .Res.~r.ch, Memor~da. be f!ent. 

to you as I believe that they might have been of some·interest 

.in connection.with the study'~hich I.helped you in pr~paring 

in August ·anq ·s~pt~be~ • .:At best ~hey.represent.crude beginnings. 

of· the ap~oach whie,h· I shou_fd :lik:S to s.ee used in this problem. 

I ~ope·to be.in ·w~~ington on December.7 and 11, and I should 

like to drop in and read our 'fi.D.al report if possible. We are 

contiriuing to think .about this' problem here, and should be .. ~ppy to keep . in :touch ol'! it'~ · · · · 

·Please sign and return the attached enclosure receipt. . . . .. . . . " 

Sincerely, 

&4.~ RCR:cag 

ED.els: RM-959 

RM-1032 

RM-1046-1 

... 

··: 

.. : 

Electronics Division 

" 

IF ENCLOSURES ARE W·IT°HDR-AWN OR NOT ATTACH0ED TffE .' 

CL.\SSIFICATIOl\I OF. Tl·'5 C'::R~[;POlllDEN.:E' Vl:LL BE 

CANCELLED 1N ACCOR°C0.l .. ~E. >li~TH ~A~ 2511: AFR 205'· I. 

I o 

1 

o 

1 

I ' o Io ' .. o .!- 1 I .... 

NOTICE-Thi• material contain• Information affeding the. nallonal. defense of the Unlled States within the meaning of the e1plona11e lawi, Tllle'.il u.S.·C.,- · Sedions 793 and 794, the tran1miulon or revelation of which In. an)' manner ta an unauthorized peroon is prohibited by law. , .. J ..... '""'\ 
.. 

DEPARTMENT OF THE AIR FORCE 

HEADQUARTERS UNITED STATES AIR FORCE 

WASHINGTON Z5, D. C. 

Director, National Security Agency 

3801 Nebraska Avenue 

Washington 25, D.c. 

Attention: Mr. William F. Friedman 

Dear Mr. Friedman: 

10 November 1953 

In accordance with enclosed self-explanatory letter, 

foI"\J8.l'ded herewith for you use and retention are Project RAND 

pu!>lications: RM-959 

4 Incle 

a/s 

RM-1032 

RM-1046-l 

Very truly yours, 

r :: j ~ ~T~~-!.:_~ ~··;? !-.~,'' .' ~'v ,. "' ... :·_:· · .. l:. ' 
.t .• 

' 

REi ,Jl?,;.\,~ 953 

~t"nt1 

SECURITY INHJRMATION •• 

-- .,. ___ ... __ .....,,. 

" 

·5 November 1953- L-14660 

... 

Director.· 11~4 3S01 Nebraak& Avenue 

Washington 25 • ~· · c. 

Attention: Mr. w.- F. Friedman-. 

·near Sir:· 

·. .fnNl ~'3 

Enclosed a~". the RAND data indicate_c;l be;t,<>W. Please sign an~>.~\· -~~....-<ri'' retu:rn a copy·~r ~his letter to ackn?Wledge receipt of 'the ..) 

classified-material. . · · 

We wish to call your attention to the·following regarding RAND 

Research Memoranda. · 'They are working papers and . may be expanded, 

· modified, or ·withdrawn at any time. Distribution to abstracti.iig · 

agencie~ is not authorized. 

.. 

. ' 

. . 

Ve~ truly yours, 

THE.lW-lD CORPORATiON 

v. B. Von Sonn 

Publications 

: RECE~D FROM THE RAND CORPORATION RM-ms·,. c. 123, Abstract c. 105 

·m;'es 

.Sf CR ET,., 

SEEURITY INFORMMION 

If ENCLOSURES ARE WITHDRAWN OR NOT AnACHED THE 

CLASSIFICATION OF THIS CORRESPONDENCE WILL BE 

CANCELLED IN ACCORDANCE WITH PAR: 25E AFR 205-1. 

NOTICE-This materlal cantalns Information affecting the nallonal defense of th• United States within the meaning af the espionage laws, Tille 18 U.S.C., 

Sections 793 and 794, the transmloslon or revelatlon of whlc• In any manner la an unauthorized person 11 prohibited by law. 
n.tiUODioa 

nt. RicbU'd C. 

Diviaioo ~ 

Thi Rull. ~\1.oa 

1700 Main Stred 

8U.t& Mollica, Calltor"Q1& 

Dear- nr. ~· 

REF . ID: A699. 

1 DEC 1953 

R.oeSpt ot yo:« l.tta ot %'( october 1.953 Vitb ita 

1DeloM4. RAID n.wi.rch ............ ia o.clmDWledaN· 

lbce i bave been out ot t«Ml, tho mat.tu bu c:ml.1'. 

NOU't~ lMe-n ~ to wt attezrlioa. n-. accept 

.., apprecia'ion 'f« ..mtac tae 4oeulleslta· 

. I abaU be 'hippy to - 'JOO. 4u:rUtc ~ ~ 

vtait to.~ (Ill 1 ar 11 D14• Jbt:r. 

cc: M; 

e/s s/ ASST (Mr. Friedman} ,.--

st.nou.17, 

!o/ ·3 o 1rn1 195~ 

V1.WAX P .. ftJJZWI . tlpeci&l AMi.st.aat 

M/R: AcknoVledgement o~ receipt or RAND Retee.reh Maor&nda ~ Dr. Rayaond • 1 proposed via it to Washington 7 or ll Dec. at which 

iime be would 1ike to aee Mr. Friedm.n. . ' 

FJrl.otJD8/S/ASST/f/J4.93/30 Nov 53