roved for Release b NSA on 03-24-2014 ursuantto E.O. 135 
REF II: A70.0B7 ·~ ..... 

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RE.ID:A70087 

NOR~ cotii'ii:ti 

GREVILLE PARK AVENUE 

ASHTEAD, SURREY 
REF .A70087 

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• REF rn.:A.Jioa1 

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6 June 1944. 

MJ ~ear Denniston: 

Almost a aonth baa flown by sine~ 7our last letter and 

I hasten to repl7. 

Someda7 I hope to tell 7ou some or the details of :tfrl 

encountering "Y" on the train that da7 and bow ·COnf"used I 

was by finding her surrounded by a bevy or young women who 

were being taken into the Marine Corps. However. once her 

identification was properly made 1 I lost no.time in joining her and 1n helping her meet Miss Chaplin at the station. 

We have seen the.young lady a.couple or times and shortl7 

she is to be our weekend guest. I·th1nk she has demonstrated 

an ability to take good care or herself and apparentl7 needs no 

special looking-atter. It would have been nice to •exchange daughters". but "Y" got the jump on Barbara vho vill not be 

ready to gra~uate until a year trom now. At that time 1 however. 

we will .review the pos'ition. 

I am indeed sorr7 to learn or the tragic death ot Captain Baudouin. I note your courtee')IS otter to ask· the executors 

of his estate to let you have a COPJ' of a reprint or his book 

on ID1 behalf. 'While I would be most happ7 to ba ve a second . copy nevertheless the .tact that I have one provided through 

your courtesy. I bel!~ve; and our Station library does not 

have a copy, I a.m sure that a second.cop7 tor our library would be most welcome. . · · 

We all think ve1.7 highly or Captain Fried and· ·I am. 

therefore. ve17 glad to learn of' your regard f'or him. He is 

keen# quick. and a thorough workman. The reports which he is 

sending are excellent and much appreciated. I am sure that as 

time goes on you and your associates will f'ind him more and more likaAtle~. ·Also• he is an excellent golter it' J'OU do not alread7 

know 1t. and I think he bas been looking forward to doing a bit 

of golfing. 

Despite the tact.that your young man has· demonstrated 

his superiorit7 over 7ou 1n go·1r 1 I im&gine that you were not 

too displeased over his progress in that wicked game. As f'or · tennis, I have completel7 given that up and I am wondering hov 

you are able to keep it up. ·non•t 7ou think that 1skpretty violent. especially the sort of' pl&J'. I watched you perform. 

In a recent letter f'rom Filby I learn with· considerable 

distress that P&Dricia Bartley bas not made a sutricient recover7 

to rejoin t;ne shov th&~ she ha~ anti~ipated. I wrote her a 
• REF· ID:A70087 

•• 

letter some weeks ago which ma7 not have reached her, but· in it 

I asked her to let me have her brother's name and addl-ess so that 

ve might be able to entertain him should be come to Washington. I hope tbat Patricia is better by this time. 

Things are moving along he.re at an even pace and good work . is beilig·dc;>Jle. What is the latest word about a second visit 

trom 7~u. 

With cordial greetings to Mrs. Denniston, 7oursel.f, and all 7our associates, I am, 

William. F. Friedman. 

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•• REF ID_: A70-087 •. 

5 Auguat 1944. 

My dear Denniston: 

MallJ' tbanka tor 7ov letter ot 20 Jul7. It vaa ver7 good to hear trom 7ou and.especially to know hov 11Uch·7ou enjO)"ed Rovlett'a visit. I wish we could have more fl'equent personal 

contacts as I &JI a great believer 1n the :value thereot. 

I &11 ao glad that the three golt balls· t1nall7 were turned 

over to you atter their long transit, and that 7ou tind them useful. 

Ky own golf haa_1Jlproved and.I·would like to have another round 

with 7ou here aOJ1e till• soon.· 

I he~r that we are going to have some visitors from your direction some time next month and I am.looking torvapd to reunion. 

Is there an:, pos~1b111t7 or 70~ being along? It would be so nice 

to see 7ou. · · 

.•' 

With regar~ to a book bJ· L&uren~e Dvight Smith, you sa7 

that it is. nov in publication, but a book b7 the same man s·L·~ 

under the same title vas published last 7ear and I received a cop7 

trom the publishers at the time of its.issue. Naturall7, the pub- lisher wanted some comment but I merel7 acknowledged receipt with 

thanks. .Smith was a Militar7 .Intelligence Reserve office a number 

ot years ago and to the beat ot 111.J' knowledge he bad no direct contact vith crn>tograpb1c work lrt &l1J time. He •J' have had some 

V8'1'J' indi~ect contact, but it ..!,.O I do .not know ~bat it vaa. I 

thaught his book was rather P'l.l"lle and of no consequence. I do not 

recall tbat I even took the t~buble to read it carefull7. It 7ou 

viah ae to get a COPJ' t9r 7our use, please advise me and I shall be 

bapJ>7 to do so. On the other band, it 7ou wish ~o obtain one. trom 

lecal a.ources, the name ot the publisher ia W. W. Norton & Compan7, Inc. , New York 01 t7. · 

. . In looking up the toregoing information, I round a note by 

Geottre7 Stevens written after I bad loaned him '1111' COP7 tor peruaAl. It aa7a: ait occurs to • that one Bight •ke quite a lot ot mone7 

b7 writing this 1ort ot drivel •~shtl7 d1tterentl7 about once eve'1'J' 

six aonths. under a ditterent n~e plume!" - . Both Mrs. Friedman and I are ve'f!7 h&pp7 to be able to have - Y spend some tiae with us because ab• is such.a nice 7oung ladJ'. 

We bave tried tvo or three tiaea to have.her with us on other o~siona but, unf'ortunatel7, 'iaa.:-into previous coJDllitmenta on her 

part. She seems to b~ popular. )le expect ~o see he~ soon again • 

. Please give SJ ve17 cordj.al greetings to 'Mrs. Denniston 

and to all 1ll1' JIBDJ' friends at Berkele7 Street. 

S1ncerel7, 

William P. Friedman. 
• REF ID:A70087. 

September 26, 1945 

J1J dear Denniatont 

This 1• just a abort note to tell 7ou tbat I got back home a&t•lJ about tvo veeka ago after a rather lorag and soaeVb&t ted1oua, but not unpleasant, air jou:rne7. I 

&lao vant to e&J hov auch I regret Aot havi.Dg been able to 

V1•1t vith 7ou. I bad. indeed looked torvard to spending 

a day at North Corner and. chatting with JOU and llre. 

Denniston, but rq a1tut.t1on va• auch that I bad to hur17 

back. Alao, I Jlight aa7 tbat I had caught a rather bad 

cold in P'rankturt and vaa t••l1ng in no ab&pe to pl&J golr, having, I bel1•••• a tair amount ot tever at the time. 

I bt.ve ,..our ver7 nice letter or last June before 

ae and ab&ll tre&aure 1t greatl7. I hope that 7ou t.re tt1ncl ... 1ng your nev vork a aource ot pleas~ and 1napirat1on, ' tor I know that J'OU h&ve a va7 vith 7ou tb&t ehoul.d appeal 

to the 70UJlS men vbom 'JOU are going to inatruct. 

I hope that 7011 found Y in good health and not too 

b&dl7 ah&ken by the untortunate d ... th of her friend. We 

veM aorr7 not to have been able to do more tor her during th• courae ot her rta,-. but Ybat tinl• ve did have v1th her 

endeared her to ua. She 1• indeed. a ver7 nice 7oung woman. 

Barbar& baa gone back to finish her senior 79ar at 

Re.dcl1tte. After that 8he me.1 go abroad• and if ahe ahould 

go to Jnaland tor t'Urther atud7 ve aball be onl7 to bappJ 

to avail oura•lvea of 7our ver7 oourteoua ofter to keep an •1• out tor her. 

With ver1 beat regards, I am, 

lloat aincerel7 70ura, 

Om!llAnder A. G .. Demdaton 

North Corner 

AehtM<l, Surra7 

England 
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Colonel Friedman, 

War Department, ~"iashington 

JJy Dear Colonel, 

REF ID:A70087 

16 April 1942 

Commander Denniston has sent me your letter of March 20. 

I am very glad that you found something of interest in 

reading my "Elements of Cryptography," and I wish to ex~ress 

to you D\V sincere thanks for. the laudatory compliments which 

you have been kind enough to give me. 

I see no objectim to :the translatim of nw book into 

English and to its being published in an editim not to be 

sold to the public of 1000 copies, the use of which, as your 

letter points out, would be reserved to the Cryptographic 

Services of the \"iar Department. 

The following are the principles upon vdlich, in my opinion, 

we could consider this publication. 

(a) the authorization for the printing would be 

limited to 1000 copies (or any other number which you deem 

desirable) intended for use \'oi.thin the War Department. My 

rights to any subsequent publicatim of this translation 

intended for the public would remain distinctly reserved. 

(b) as author's royalties, the ~var '-'epartment would ~llow me for each copy an &mollllt equivalent to about l"-' of 

the price which this copy would bring if it were published 

in the usual way. I have onl.y a vague idea of what this 

sale price in America would be. I place the matter with 

confidence entirely in your hands to decide on this point. 

(c) the name of the author would appear on each copy 

only as "Capitaine BAUDOUlN, 11 with no other mention. 

(d) concerning the work o£ the translation itself: 

either the translation would be made in America 11nder your 

supervision, in which case it appears to me fair that the 

expenses involved in the translation should be deducted from 

the author's royalties; or the translation would be made in 

England. 

I am personally inclined tov1ards this solution. In order 

to preserve its pedagogical val.ue, it seems to me that the 

translation of the work should not be confined to the text 

alone but should extend also to the examples g!'. deciphement, 

which are.:an1·illustrati.on of. the text and a concret.e application 

of the principles arid methods which are explained. there. 

That is, it would be advisable to take out the examples which 

appear in the French editic:n and substitute for them other 

examples in l!.:nglish, chosen so a.s to be adapted to the translation of the text. A wo:ric of this sort requjres the direct 

collaboration of the author and translator. 

Comnander DEN1'1ISTCA~, with whom I talked about this matter 

and who is likewise interested in it, will Wldoubted.4' tell 
• REF ID:A70087 e 

tell you himself' how he thinks the plan can be carried out. 

In any event, it seems to me that we must count on a period 

of about t\'IO months to make a good job of it. 

I might add that if certain passages in the book which 

are or interest onll' from the point of view of speculative· 

studJ" (the revo1v:Uig circular grills, for example) should 

be omitted in your opinion, I shall not let JJ\V" pride as an 

author stand in the way. The essential thing is that this 

translation should be a useful :working tool for the Englishspeaking beginner. 

Again expressing 116' thanks, I beg you to accept the 

expression of JJ\V" most respectful and faithful sentiments. 
• REF ID :A70087 e 

16 Avril 1942 

Colonel F R I E D M A N 

WAR DEPARTMENT 

WASHINGTON. 

Mon Co lone 1, 

Le Commander DENNISTON m•a transmis votre lettre 

du 20 Mars. 

' / Je suis tres heureux que vous ayiez trouve quelque 

interet a la lecture de mes "Elements de Cryptographie" et je 

vous remercie tres vivement des appreciations elogieuses que 

vous voulez bien m'en exprimer. 

Je ne -vois aucune objection a ce que mon livre soit traduit 

en langue anglaise et qu 1il en soit imprim~ une edition "hors 

vente" de 1000 exemplaires,dont,comme 1 11ndique votre lettre, 

1 1usage serait reserve aux Services Cryptographiques du War 

Departl'Tlent. 

Voici sur quelles b~ses,a mon sens,nous pourrions envisager 

cette publication. 

a/ 1 1autorisation d'imprimer serait limitee aux 1000 

exemplaires(ou tout autre mo~bre que vous jugerez bon) destines 

aux besoins interieurs du War Department,mes droits a toute 

publication ult~rieure de cette traduction dans le grand public 

restant expressement reserves_. 

b/ ' a " titre de droits d 1auteur 11 me serait alloue sur cha~ue exemplaire,par le War Department,un montant d'environ 

10 7D du prix auquel serait mis en vente cet exemplaire s 'il 

etait edite en librairie.Je n'ai qu'une idee assez vague de 

ce que pourrait ~tre ce prix de vente en Amerique.Je m'en 

remets done entierement a vous,de toute confiance,pour preciser ce point. 

of le nom de l'auteur figurerait sur chaque exemplaire 

sous la seule forme " Capitaine BAUDOUIN " sans autre mention. 
• REF ID:A70087 • 2 

d/ en ce qui concerne le travail de traduction proprement 

dit : 

I J 

- ou bien cette traduction serait effectuee en Amerique 

sous votre contr0le;et dans ce cas il m'apparait equitable 

que les frais que pourrait entrainer cette traduction viennent 

en deduction des sommes qui me seraient allouees a titre de 

droi ts d•~auteur 

- ou bien cette traduction serait effectu8e en Angleter~e 

Je pencherais personnellememt pour cette solution. 

En effet,1la traduction de l~'ouvrage,pour conserver toute sa 

valeur pedagogique,no·p~ut,a mon avis,se limiter au temte seul, 

mais doit porter egalement sur les examples de decryptement qui sont une illustration d~ ce texte et une application 

concrete des principes et des methodes qui s'y trouvent exposes. 

C'est dire qu'il y aurait lieu de reprendre tous les examples 

qui figurent dans 1 1ed1tion francaise,et de leur substituer 

d'autres examples en langue anglaise,choisis en vue de s'adapter a la trad.uction du' texte.Or un travail de ce genre exige la collaboration directe de 1 1auteur et du traducteur. 

Le Commander DENhISTON avec lequel je me suis entretenu 

de ce proje~,et qui s'y intJresse egalement,vous dira sans 

doute lui-meme comment 11 en\,-isage--se: realisation.En tout etat 

de cause 11 me semble qu'il faille compter sur un delai de 

deux mois environ po~r mener cette t4che a b1en. 

J'ajoute que si certair.s passages du livre qui n'offrent 

qu•un interit d'etude speculative (les grilles circul~ires tourne.ntes,par exemple) vous semblent devoir etre supprimes 

je n 1y mettrai aucun amour-propre auteur.~essentiel est que 

cette traduction soit un instrument de travail utile pour le 

debutant de langue anglaise. 

En vous renouvelant mes remerciements,je vous prie,mon Colonel,de croire ~ l'e~pression de mes sentiments tres 

respectueusement devoues. 
REF ID:A70087 

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Room 47, 

· Foreign Office. 

22nd April, 1942. 

My dear 1y.·~...._,., 

I enclose a personal letter from Baudouin to 

y9u in Vlhich he discusses your proposal to translate 

his book. . 

He is naturl3.lly vacy gratified that his ·•child'' 

should be so a!)nraacia.ted by you. One thing :ne feels 

strongly is t..tu1t the exsm_ples, v1nich were created 

for French pur!X>Ses, S...i.Ould be redr1a.fted for an 

Ebglish edition . 

.As ~1ou know hs has been retained in England and l'las a considerable anount of spare tima. He 

has therefore conceived tl1e idea that ha and a 

French colleague !ilight do the transl.· •tion and redraft 

the examples, subniiting his work to one of our 

l:")eople who kn0\"1s French anc:. the subject mattsr. This 

will ensure tha~ the translation of the author of 

the author will be checl<ed and vli.11 read as ·~glish. 

He y;ould be VSI'Y glad to kna1 vlnich method · 

of Jroducing the translation see~s preferable to 

you. In any ca~e he nill l)r=>bl:bly noa b3gin on his 

translation. . 

It is ~ossible that you are e..rrsnging to do 

likewise. . If t..'l-J.e.T,, is so, a thira ~ar'ty could act 

as I1eader· ana. ;.rocluca a fin'1.l text for t.J.1e pr:inter. 

Colonel Friedman, 

war )jepartment' W.ASiiINGTON. 
• REF ID:A70087. 

Ca_ptain Ropr Baudouin 

c/o Coadr. A. a. Denniston 

Foreign Oi'fice Building, lbom L.7 

London, Qigland 

Jq dear Captain Baudouin: 

~ 11, 19li2 

Penait me first to thank you for your very cordial letter 

of April 16th, forwarded to me by Comdr. Denniston. 

I have given very careful thout;ht to the project which I 

mentioned to you in my letter of !.:arch 20th, and to the principles 

upon which, in your opinion, the publication of the translation of 

your book should be oonsidered. It is with much regret that I find 

that the aut.horization of the paymant of a small royalty on each 

of the thousand copies which I proposed to print would be attended 

with so t:lany difficulties and so much 11 red tape" that. I have come 

to the concluaion that it would be better to abandon further thought 

alone these lines. 

The foregoing is the principal consideration which leads 

me to the decision not to print the translation hereJ the other 

provisions which you set forth could easily be r.iet. I note that 

you say it appears fair to you that the expenses involved in the 

t&'lslation should be deducted froc the author' a royal ties in case 

our translation would be printed here. In view of the fact that 

our translntion was mace by official persormel in their spare time, 

the expense involved therein could hardly be accurately estimated. 

HOW'ever, I should Sa;/ if an estimate where oade, it would probab~ 

come to about what the royalty would be if your figure of ten percent of the sale price per copy were used as a basis. However, all 

this is beside the point now, for as indicated above, I think it 

would be best for us not to print our translation but to await the 

publication of a translation which you have proposed. If you can 

find a publisher in England or in America, I know we would be glad 

to purchase a number of copies for our school and librar,y. 

Your proposal to extend the translation also to the examples 

is probabl.T a i;ood one but I may say that we have, in the past, not 

felt this to be necessary in the case of the other translations. 

The amount of -work involved in changing the examples 1s veey con-
• REF ID:A70087 • 

JUD8 11, 1942 

C'apta1n Baudouin 

sidarable and qui t.e often involves much more than changint: a few 

letters. You are perf'ectl.7 correct when lrou say that a work of 

this sort should require the direct collaboration of the author and 

the translator, whereas, if the translation did not extend to the 

examples, such direct collaboration, while desirable is not 

essential. 

I hope that my decision will not ccne as a disappointr.ient 

to J'OU• I tnist th.a. t you w:l 11 proceed with :,rour om translation 

and actually find a publisher wl:o would be willing tD print it. 

Thanking you most sincerel.J' for your consideration anc :reci;>rocating 

your cordial sentiments, I am, 

Faithfully yours, 

Williac :•. Friedman 

Head Cryptanalyst 

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REF ID:A70087 ••• 

12 Apl'1l 1945 •. 

Dear Denniaton: 

Aa the date of.your retirement from active service 

approaches, I Yant to tell 7ou hov much I perao.D&ll7 bav~ 

enjored our friendship and hov highly I regard the cordial 

relationship which exiated between ua trom 1941 to the 

present moment. 

Words are.often poor th1nge to express the deep teel1nga one baa at time• l~ke these, but I do v~t 7ou to know 

that there are man7 or us here who realize the-except1onall7· valuable contribution whieb JOU made toward bringing the var 

in Europe to a auccesstul conclusion. This added.to what 

7ou d.14 1n the laat war make• a target tor those who will 

follow JOU to shoot at, and 1t Will take some ver7 good shooting to co~ near it. · 

I must aak ~our forgiveneaa for lllJ failure even to 

acknowledge receipt or your very nice letter ot .last December, 

conv971ng 7our Christmas Greetings to us. I can onlJ' plead gu1lt7 or m1ala71ns 1t under a pile ot atutt. in JS17 basket. 

Lite hae been vel')' hectic tor me because I have a tinser in 

practically every pie on· the premises and 1n some ott the 

premiaea. I tr7 to do too mucb--tbat'a m, weakness. 

I aav Y laat veek at the Corderman•a a.nd took her home • . She seems to be in high ap1r1ta and in excellent health. She 

apparentl7 vanta to sta1 over here tor aome time 7et, but I 

b&ve bea:rd that you are rather anxious to have her come back. 

I can readilJ understand that 7ou are getting a bit lonesome 

tor her, but at the same time tbia experience abroad will be 

quite uaetul to her. You youreel.t said something to that 

etfect in.your last letter to me. 

Have J'OU an1 idea ot com.tng to the United States atter 

a bit? I understand that 7ou are thinking ot becoming aaaoc1-

ate4 v1th one of the schools aro\Uld London and continuing toi 

c&:rl'J' on 1n a more or lees active manner aa a pedagog. This 

.vould have·aome advantages, but I wonder if a nice long ~eat 

wouldn't be advisa~le before undertaking further active work. 

It 7ou should come to America, I here and now extend a most 

cordial invitation to be our guest wherever we ma.7 be. I 

aball vant to play golt vith rou--and tr7 to do better than 

laet time. 

. With very best regarda to Mrs. U.aniaton and warmest 

greetings to you, I am. · 

Moat Siricerel7, 
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AGD/21S3 • ,F ID:A70087 

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12th December, 1944. ~ 

Dear~~. 

A line of very hearty good wishes to you 

and r.~rs. Friedman in which I know my wif'e will 

join me. Above all I wish you all a very 

successf'ul 1945. 

Many thanks to both of you for your kindness 

in looking after my daughter. I hear f'roni her 

that she has had her first holiday and has begun 

to learn something of' .America outside Washington. 

This is all to the good because important though 

Washington is, the U.S.A. is a very vast place and 

the more we Britishers know about it the better 

for the f'uture. I can only hope that the 

admirable liaison which we have started may 

continue long and successfully. 

•:/arm greetings to you both. 

Yours 

W.F. Friedman, Esq. 
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