.. .. ·- • Miss Phill:.i..p~/iag REF ID: A6.8 97 9 

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t;" ' . _; : 

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Fort- Ho111iou.th Xra.Q:ition Committee 

·:,)r. ~iillien F. Friedn.an . 

Cl't.ief, J.':r..:icimiunl Divis:!.. on .-: · : 

itnued :Foi•cos Securit.y ~l.:.ancy: · 

lt2i.i. Hor.Ji George I~ason. D::-ive 

/'-?' li11'.;ton~ Vir ~a 

l 7 ticpter.foe1" l.?53 

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t -~ll~~-_:,rr-J . 

V' ... r·· \ . . ./:- 1 ' 

.. -1. ~:Director o£ our Sl5nal Corp:;;. MuseUi~ and !Jf)IUbcr>J of 

the Fort ~onmouth· Tra.-:i:ition CO!:"~'!!-~ttc~ id.sh to t:>:)t up a ljuoew.1 e:.:x..l'9· 

bit -of Si;;ru::.:i. Carps work !n. ceyptor_,rapby. . · 

2. Pl~~~ adv-lse !o;ll.a .. G ·o;Jsolcte ::r,rpcoz.ra.phic equi.tlflent »Jal · ·. 

~ b~ diDpleycd_ -without seclll'ity- l":~-flk. ~...-0 ilad thout:b.t that Je.t:·fe1•son•s 

cylil'J.'irical cipher device, type: Z.:~4, and ·i;he Svi:;dish Ilagolin Con• 

verte.r M209,: co-.Ud b$ show. Thoz-o are ma.-1.y others, no d.ouot, that 

,_,_._,-.. _ ·" ·- __ .. mi.:Jit oe in. a displq,. a~ ii' \;e. ere unable t~ obtaL.1 i:.hc Q('11lii:went. 

it.ooll' :rn;\ r:ight use photot}'aphs of _the C<iuii'f.'10nt. 

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J. ·. i-Jrs. Mina P.. Bryan, .Aoso6-iatc idito:r oi' ~::.ho· Paparo of 

Thanas. J~f ferson, 1-Tinueton tmivo:·~ ;;.y ·Library, nu:.;~ C:ii tad 7ou m.1.ght 

be aol&· to teμ ua where Jei'.ferson!D notes .. !JrL t.."'J.o whoo1 ci!Jher are 

available to historians. . · ·.. :'. ; ;:., · - 'I ~ 

. . 4.. Should you hmr.<~ ony- sug£;estions plea.:;c let us knolr. ' . I • '1 "I;:"- •.:.I 

,'.· l :. ,. ".,, .. .., I; ... J 

/s/ J. E. H~ll'\lUCH 

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pursuantto E .o. 1352a ·: 
REF ID:A6897ft 

Colonel J. z. Heinrich 

Chairmn 

Port MoDDtOU.th Tndition Committee 

SiglJal Corps Board 

Fort Monmouth, 5ev Jersey 

Dear Colonel Heinrich: 

310 Second Street,. S.E. 

Waahingt;on 3,. D. C. 

27 October 1953 

'l'hia ia a short note to acknowledge yaur letter of 

17 September to Mr. William P. Friedmn. 

Mr. Friedan is out ot town until the last of November. 

Upon his return be will vrite to you rega.rding the Museum 

exhibit of SigD&l. Corps work in cr,yptography. 

Sincerely, 

I. B. Young 

Secretary 
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IN REPLY 

REFER TO: 

REF ID:A689 • 

HEADQUARTERS 

SIGNAL CORPS CENTER AND FORT MONMOUTH 

FORT MONMOUTH, NEW JERSEY 

Fort Homou.th Tradition Committee 

Miss Phillips/lag 

17 September 1953 

SUBJECT: Museum Exh:i.bi t of Cryptographic lquipnent 

THRUs Colonel Haskell Cleaves 

Chairman, Signal Corps Tradition Camnittee 

Department of the AlTf¥ 

Office or the Chief Signal. Officer 

'Washington 251 D. c. 

~ Dr. William F. Friedman 

Chie!, Technical. Division 

Armed Forces Security Ageney 

424 North Geat"ge Mason Drive 

Arlington1 Virginia 

TOI 

1. The Director ot our Signal Corps Musel.ml and members of 

the Fort Momouth Tradition Camnittee wish to set up a aiseum exl:Jj.-

bi t or Signal Carps work in cryptograp}\y. 

2. Please advise what obsolete cryptographic equii::aent mq 

be displqed without security risk. iTe had thoo.gbt that Jefi'erson•s 

cylindrical cipher device 1 type 11941 and the Swedish Hagelin Con- -

verter M2091 could be shown. There are DlalQ" others, no dollbt, that 

might be in a displq 1 and if we are unable to obtain the equi}lllent 

itself we might use photographs o! the equipnent. 

J. Hrs. Hlna R. Bryan, .Associate Editor of the Papers of 

Thanas Jefferson,, Princeton am.versi ty Library 1 suggested you. might 

be able to tell ws wllere Jefi'erson•s notes on the 'Wheel cipher are 

available to historians. 

4. Should you. have 8fI3 suggestions please let us knoW. 
William F. Friedman 

310 Second Street, S.E. 

Washington 3, D. C . 

. 0 

·REF ID :A68979 

Colonel J. E. Heinrich 

Chairman 

~ort Monmouth _Tradition Committee 

$igna,1 Corps 130a.rd 

fort Mor;imouthl New Jersey 

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