MEMORANDUM FOR1 Distribution 

SUBJECTS SCAG Conference 

Enclosures& 

31 llo1' 1951. 

AFSA-OOf 

(A) Draft aganda 

(B) Notes to accompm11' draft agon~ 

l. The enclosures are .tortrard.ad .tor telephonic concurrence and/or 

comments (Ext •. 60240). 

2. It 5.s proposed to d1str1blte copies of the agGnd.a to SCAG 

members at the opening session. Enclosure (B) :ls intended only for 

AFSA p.er.sonnel. 

D1stribu.tion1 

Adm. Stone • 1 copy 

Col. Oollirls•l cow 

Capt. Wenger-1 copy 

Col. Hetherington• l cow 

Capt. Holtwick • 4 copios 

Capt. Harper • 4 copies 

' J.-.... ~~ . '.)Afh~ '·d~ / WILtIAM F. FRIED?.1AN 

Technical Consultant 

This le~ter inq- be reduced to CONFIDENTllL when enclosures are removed. 

TOP SECRET eclassified and approved for 

elease by NSA on 09-23-2014 

ursuantto E .0. 13526 
. . ~·. , REF ID:A660. 

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SPECIAL ORYP!'OI.OGIC ADVISORY GROUP 

(SCAG) 

.Agenda 

tor 

First Conterence ot SCAG 

4-5 June 1951 

1 

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Time 

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10:00 

Time: 10:00 A.M. 

SPECIAL CRYPTOLOGIC ADVISORY GROUP (SCAG) 

Agenda 

tor 

First Conference of SCAG 

4-S June 1951 

- OFENll\n Sl!SSION 

Jlo:zardng of 4 June 19Sl 

Place: Office or the Director, .Armad Forces Security AgencJ", Room US, 

Building 19, Naval Security Station, ,3801 I~ebraska Avenue, North West, 

Washington. 

1. .Address of welcome: 

~. William l1!ebster, Chairman, P..oeoa.rch and Developnent Boo.rd (RDB) 

lO:OS 2. a. Presentation regarding the Armed Forces Seourit7 Ageno7 (AFSA): 

Organization of AJ'SA; position in Department ot DeteMe and Armed 

Forces; relationships With otho-.r U.S. agenoiee am bodies such a.a the 

United States C«!munieations liltell1gencfi Board (USCIB), alld the ArmGd. 

Foroes SeauritJ" Agency Council (AFSAC) • 

. Rear Admiral. Earl E. st.one, US~:, Director, AFSA ·.t 

b. Question and diecrjssion period. 

10:.30 3. a. Presentation regarding the uae and. value of communications intel.11gence 

( COJ.f.!MT) in natio:na.1. defense: · 

Capt. J.N. Wenger, USN, Deputy Director, AFSA 

b. Qaest\on and discussion period. 

ll:OO 4. a. Presentation on procedural ?Da.ttera in aor111ection 1fith the :f'unotioning 

of SC.AG as an agency of RDB and a consultative bcd7 of .AFSA: 

ll:.30 5. 

11•35 6. 

Mr. Edwin A. Spaalm.!an, Emcutiva Diractor,Committee on Elec·t.ronic.s,RDB 

b. Question and discussion period. 

Outline of progr81.ll for technical sessions: 

Mr. William F .• Friedman, Technica.l Consultant, AFSA 

Indoctrination of SCAG membore not a.h"'Gady indoctrinated: 

Capt. J.N. Wenger, USH, Deputy Director,, AFSA 

12:00 lJmeheon: Co!'..ference Room, adjoining Admiral Stonees Office, Room 19-125. 

ARMED FORCES SECURITY AGENCY 

T9P SECRET Ae()RN.L.Josr~£ '"A'' 

• 
I 2100 

TOP •Eeitt.IYP~~ (jORN 

This sheet of paper and all of its contents must be safeguarded with the greatest care. 

Utmost secrecy is necessary to prevent drying up this sort of vita] intelligence at its source. 

Tim: 1:00 P.!i. 

TECHMICAL SESSIONS 

Cam.onci!Jg attor lunch on I. June 1951 

Place: Room 200, :a.dlding 20, Naval Security station 

l. a. Pre2Xllltation to illustrate haw a oamplu: CO~!INT probla.'11 was euceese-

.f'ulq handled in World \\'ar II: 

LCDR Ar.drew lf. Gleason, tmm 

I. 'lhe ccyptographere• point of viGW 

A. Requirements 

B. Codas and ciphers C. Mechanics of a cipher system 

II. Single-letter substitution oiphers 

A. General description 

B.. J!.achine systems 

c. Pad systems; additivee 

III. \':irttd-l'lbeal machir.es am the Ger.man Enigma 

A.. General deacript;ion 

B. The ed:a.erdal Enigma 

c.. 'Ihe stecke:rod Enig9!a 

D. Tho Bomba 

E. Duenna 

b. Question and diecuasion period .. 

2. a. Tour of special ci"yptamlytio .ma.chines at the Nawl. Sequrity Stat.ion: 

Dr. H. Csmpa.igna am Dr .. J.J. F.achus 

I. Atlas 

Fresentation regarding AFSA • $ posit.ion end program. in the 

field ot electronic coaputera 

II. Damon I a..'1d. Demon II 

nr. Goldb01"g 

IV.. World War II Banbe for Enigma solution 

4&00 b. Question and d:lacuarsion period. 

ARMED FORCES SECURITY AGENCY 

T8P SEGRI¥£ :l\:<JOR:N 
Dil 

9:00 

10100 

llcOO 

12:00 

This sheet o~ paper and all of its contents must be safeguarded with the greatest care. 

Utmost secre~y is necessary to prevent drying up this sort of vital intelligence at its source. 

Time: 9:00 A.M. 

TECHNICAL Sl!SSIONS, Cont•d 

Morning ot S June 19$1 

Place: Reem 2m, Building 20, Naval Security Station 

PRESENTATIONS RPnARDim A CURRENT HIDH-FRIORITY AFSA PROBLEM 

l. a. Introduction to Albatross 

I. Background or the Albatross probl• 

II. V:hat ia known about the machina 

III. Present indicator S"J'Stem. 

IV. 'Ihe Round Robin machine 

To be prei1111nted h.J" Pr. F.A. Raven and i:r. D.H. Shepard 

b. Question and discussion period. 

2. Isomorphism. am wheel l"OCOV8i'J" 

I. Discuesion ot isomorphism. 

II. A sample problem in wheel. roCCJt'GlT 

To b0 presented b.J' l.!r. A.N. levGnson and lfr. E.D. Mflr5ton 

-

Luncheon: Executive dining room, Naval Security Station Cafeteria 

3 

ARMED FORCES SECURITY AGENCY 

TOP SECRET ACORN 
This sheet of p~per and all of its co~F.,t}t:feA~-~Sel\IJJfSe~ C'SiA--t\f' greatest care. Utmost secrecy 1s necessary to prevent arymg up th.is sort oivltal 1nte1tfgence at its source. 

Afternoon of S June 1951 

Time: 1:30 P.l.:. 

Assembly point: RDom 1082, Building "A", arlinu-ton Hall Station, 4000 

Loe Boulovarl, a.rlington, Virginia. ('l'ransportation from 

Navnl. Security Station to llrlington Hall Station fli.11 be 

provided for SCAG members) 

1. Tour of AFSA mcbines, to be conductod b1' L'lr. Frank D. Rowlett, 

assistod bl' Dr. A.J.S. llighley and .L:r. iiilllam J. Lawless. 

I. The IBM :lnstal.lation 

II. BAr: equipmont 

A. Abner 

B. Robin 

C. ASAF•l 

2:30 2. a. Discussion p~riod on isonorphiso und oheel rocovory. 

To be held 1n Room 2010, Iluilding "B", AHS 

b. Cotf oe will be served Jur111B thi9 poriod. 

3. a,. Presentation regarding AFSA project S EAT~R: Matrix projection 

(Room 2032, Bldg .. 11D11 ) 

Mr. Albert E. Roberts 

This presentati~n is of interest primariq to those iuambers of SCAG 

who are spec1al.1sts 1n the field of r:iathema.tics. 

3130 b. Presentation rogardinJ electronic ropresentation or rotors (Boom 

2010, Bldg., n B11 ) 

Dr. Eachus, assisted by Mr. Bay' L. Bowman and l.Jir. BDger Moulton 

This presentation is of intwost !11"imarlly to those r.iernbers of SCAG 

who are specialists in the field or electronics anl electrical . engineering. 

Final discussion. 

To be held in .(lrrv Security Agency Conf'orenoe Room (Room 117), Head• 

qWlr'ters Building, .arlington Hall Station. 

5. Closing remarks. 

Retll' Admiral F.arl E. Stone, US!i, Director, AFSA 

ARMED FORCES SECURITY AGENCY 

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10100 

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OPElJING SES$J:OlJ 

llorning ot 4 June 1951 

Times 10100 A.M. 

Place: Ofi"ice ot the Director. Arl:led Forces Security Agency. Room 118, 

Bu1ld1ng 19, No.val Security Station, 3801 Nebraska Awnua, North 

West, Washington 

1. Indoctrination of SCAG members not already 1ndoctrinated1 

Capt. J .N. Wenger, UStl, Depu't7 Director, AFSA 

10•15 2. a. Presentation l'egarding the Armed Forces Seouri.ty Agen07 (Ali'SA): 

10140 

10145 

10150 

11120 

11150 

12100 

3. 

4. 

Organization of AFSAJ position 1n Dep:irtment ot Dei'ensa and Al'med 

Forces; relationships with other u.s. agenc1oa anJ bodies ouch as 

the United states Communications Intelligence Board (USCI.a), 

and tho Armed Forces Socurity Agenq Council (AF&C)J 

Mission tor SCAG1 

Rear Admiral Earl E. Stono, USN, Director, AFSA 

b. Question and discussion period. 

:Remarks on bohalf of Lieut. Genoral Walter B. Smith, USA, Director 

of Central Intelligences 

Mr. Kingman Douglass, Assistant Director, CIA 

Address or valcome1 

:ur. William \':abater, Chairman, ~search and Development Board (.ROB) 

5. a. Presentation regarding tho use and value or coanunica.tiona 1ntellieence 

(COUINT) 1n national defense: 

Capt. J.N. Vienger, USN, Deputy Dii"ector, AFSA 

b. Question and discussion period. 

6. a. Presentation on procedural mtters in comiection with the fmictioning 

ot SCAG as an ae;cmq or RDB and a consultative bod1' ot AFSA1 

7. 

Mr. Fdmn A Speakman, Executive Diroctor, Committoe on Electronics, RDB 

b. Question and discussion period. 

Outline or prosram tor technical sessions 

• Ur. William F. Friedman, Technical Consultant, AFSA 

Luncheon tor SCAG members& Director•a -- Ottice, Boom 19-llS. 

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Zivas 

. 1100 

2100 

3100 

4&00 

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TECHNICAL SESSIONS 

Cmmencillg after lunch on 4 June 1951 

Time: 1:00 P.?I. 

Place: Roan 2<R, Building 20, ~val Security station 

1. a. Preaantation to illustrate harr a ocmpl.u CO~!IN'l' problem. was aucces-. 

f\tlq ham.led in l<:orld War II: 

LCDR Axldrew ll. Gleason, USNR 

b& Queat,ion and discussion periccl. 

2o a. Tour ot special c1'7Ptanal,t.io machines at the Naw.l Security Stat.ion: 

Dr. H. Campaigne am Dr. J.J. Fachua 

I. AtltuJ 

Presentation regarding AFSA•a position and program in the 

field or electronic ccmputers 

II. Damon I and Demon II 

III. Goldberg 

IV. World War II Banbe 

' 

- b. Q".ieetion arr! discussion period. 

2 

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10100 

11:00 

REF ID:A66052 e 

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TECHNICAL SF.gsIONS,, Cont•d 

Morning ot S June l9Sl 

Tim: 9:00 A.U. 

Place: ROCID 202,, Building 20, Naval Secn-::--.i.ty' Station 

~ENTATIONS F..IGARDim A ClraRENT HIDH-PRIORrrY APSA fROBLEM 

l. a. Inti'odaation to Alba:iiroas 

To be preeented by?~. F.A. riavcr. .. !!d :D". D.H. Shepard 

b. Question arxl discusuion pericd .. 

2. Isa:corph1era am wheel recover,y 

·To be pre::iontod b,y lf.r. A.N. IAvenson aDd. 11!". E.Do l~aton 

-

Luncheon tor SCAG l'll9Jllbers and A:ti'SA c.:nterr:Gi ~t1'tJl9 di.nin.3 room, 

Bo.'lal SeCU1.'.l\J' e·Ga.Uon catef~ !1. 

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Time 

Timi: 1:30 P.J.t. 

REF ID:A66052 

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TECHNICAL SESSIONS, Cont8d 

Afternoon ot 5 June 1951 

Aeaembl.1' point: Roan 1082, Building "A", Arlington Hall station,, Z.000 

Iae Boulevard.,, Arlington, Virginia. (Tranaportat:Lon tram 

Naval Security Station to Arlington Hall station will be 

provided tor SOAG members) 

1:30 1. a. Tour ot AFSA machines, to be conducted by Jlr. Prank B. Rowlett, 

aaaleted b.J' Dr .. A. E. Highley and .fir. William J. Lawleaa. 

I. The IBll installation 

II. RAJ! equipmnt 

b. Tour ot AFSA machines un:ler development, to be conducted by or. 

Eachua, aaaieted by :Mr. O ..J. Sch1erl.mmm. 

2:30 2. a. Diacuaeion period. on iaomorphiem and wheel racover;v. 

To be held in Rocm 2010, Building "Bl', AUS. 

b. Coffee will be served durillg thia period o 

3:30 3. a,. Preaentation regarding AFSA proj.ect SWEATER: (Room 2032, Bldg .. "B") 

Jlft. Albert E. Robert.a 

'l'hia presentation is ot interest pr:lJDarilT to those members of SCAG 

who are epecialleta in the .tield of mathematics. 

3:30 b., Presentation re~arding electrom.c representation of rotors (Rom 

2010, Bldgo llBft) 

4:30 4o 

Dro F.achua, aaeisted b.J' Mr. Rq L. Bolman, :ur. Roger Koulton, 

Jlr., Robert E. Gordon and Mr. Arthur lloulton. 

This presentation is ot interest pr1mar1q to those members ot SOAG 

who are apeoialista in the field ot electronics and. electrical 

engineering. 

Pinal discueaion. 

'l'o be held in Amq Securitl" Apnc,. Conterence Rocm (Room 117) , Headquart;en B111l<Hng, .Arlington Hall station. 

5.. Cloeing remarks. 

Rear Admiral Earl E. Stona, USN, Director, APSA 

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• 

BO!ES 

' . (for AFSA. personnel) 

TO ACOOIPANI AGENDA FOR FIRST SCAG CONFEREHCE 

1 

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Noj;es (tC'!!:,_~A-~~-omoAL!.o Jlc.comP!!J·(..M~J!!!..!E.! Firs~ SCAG qoni'ero,,!!£! 

4·"5 Lvune 19'31 

l~ a. A.rr&lge'.ments h'vo bean JrJ?.d.e to ieaue 11Co11fot'·sr.co B~.ge3" to all 

;JCAG me.tnber1 (oomept in the cs.se of Dr. E113strau, who already baa a 

n·\'1h:t te I. r: Bad.go) ,. 

b. ttm badgoa v.d.J.l be avai.l..nble by- 0030 hours on 4 June, and. will be 

piekecl. up by' Captain tt9J:•y c. Lane, who will deliver thom 11.s tollow:J: 

~14&ct.£oi': 

Dr. WLUillm Webster 

ll't". Edtdn A. Speakm.au 

Dr. John von NeuJl!8D ./ 

Dr. Stewa.'l't s. CoJ.rna / ,,/ 

Dr.. Ch."U'les B. 'l'cmpl.dno 

Dr. R.K. Pot.te.l' 

Dr.. Claude E. Shannr~:::. 

~ .. John Howal\:1 

Ur. Jooep!i. Desch 

Mr. John c. McPi1•.!1•son 

To be d.e!liveroo to: 

capt. He.zarcl 

Cai>t.. Ruard 

WDR Gleaoon 

!mR H~ll 

LCDR Hall 

Dr. Kullback 

nr. Ca.mpaigm 

Dr. Ca"'Jiai.gno Dr. Fachua 

Dr. F.a.chua 

2o a. Tho indicated AF".3A pereonnel will act aa rtguides" tor tho f'ollllFling SCJ\G u.ambers: 

D1•. von New:.LU!"W 

Dr.. Cairns 

D1". Potter 

Dr. Shannon 

Yr. Deach 

Ur .. llcFhereon 

!£:DR Gleuon 

reDR Hall 

Dr. Kullbnck 

Dr. Ce.mpaigne 

Dr. Eachus 

Dr. Eacbus 

b. It ie asenrnod that tho other m.1mbe1•a of SCAG (Dr. Tompkins, 

Dr. Er..gstrom, and !fl:~. HowDJ'(l) are su:f"fic:i.eutl7 acquai11ted vrlth AFSA an:l 

\'.'aehing·~on aa to make it um1::.oeasary to a.aaign specific "guidea" tor t.hem; 

hm.-ever, AFSA personnel should l'lak.:e ever:; effort to assist those .111embera 

whe116ver appropriate. 

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3. a. In addition to SOAG members, only the follovd.ng will be 

present at the opening aaas:ton ot tho Conference at 1000 hours, 4 June, 

1n the ot:t'!ce of DlRAFSA1 Bldg. 19, I'ISS (See page l ot Agedda) 1 

Ada. Stone 

Uzt. Webster 

Ur. Spealmvm 

Hr. .Douglass 

capt. Wenger 

Col. Hetherington capt. Harper 

Capt. Holtwick 

Kr. Fri.odman 

b. J'.amcheon tor SOAG members, fir. Speakman, Ir. :Douglass, 

DIRAFSA, the Deputies and Kr. Friedman tdU be aarwd in the Director• a 

Office after 1200 hours. 

411 a. In addition to the SCAG members, the .f'ollowing will be present 

at the tirat technical session, 1300 hours, 4 Juna, in Roan 2o-202, NSS 

{See page 2 ot Agenda): 

AFSA-OZ: 

Capt. Uoltw.1.ck 

Jtr. Rowlett 

Vl". Raven 

AFSA-0~: 

Capt. Harper 

Dr. Kull.back 

Dr. Campa1 gne 

Dr. F.achua 

:OODR Gl•eon 

:OODR Hall 

Kt-. Shepard 

lfl". IAmmeon 

1ll'. !.fa.raton 

~. Spealcman,, RDB 

Ur. Friedman, AFSA-OO'r 

b. Cot.tee w1ll be served at about 1500 houra. 

c. At the close ot this seam.on AFSA participants will emeavor to 

see that SO.AO members have transportation to their hotela. 

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; ... a. In additicin to the SCAG members, the following personnel will . be present at the lJ10rl'1ing seseion, 5 June, in Room 2<>-202, NSS (See page 3 

ot Agenda): 

APSA-<2: 

Capt. Holtwiok 

Yr. Rowlett 

Ur. Raven 

Ur. Shepard 

Jlr. Iaveneon 

Jlr. Uaratcm 

Capt. O.nnia 

Mr. Highley 

Mr., Lawleea 

:uz.. Kirby 

Mr. Reim.era 

Mr. Schmitt 

llr. Shinn 

lti". Besse 

Mr. Speakman, RDB 

Mr. Friedman, A.fSA•OOO: 

AFSA-03: 

Capt. Harper 

Dr. KUllback 

Dr. Campaigne 

Dr. 'Eachua 

WDR Gleason 

LCDR Hall 

b. Cottee will be served. at abol.lt 1030 hours. 

c. A speeial luncheon costing about ei.oo will be served 1n the 

Executive Dining Room, Naval Security Station Cafeteria. In 'View 0: the 

limlted fllC111t1es, onq the .toUovdng can be r&1Jd1~ accomnoc1ate<b 

SCAG members 

1!.r. Speal::mtm 

. Col. Collins 

Capt. v:enger Col. Hetherington 

Capt. L.s. Howt.h, ()p-202 

Capt. w.u. Gullett, CO, NSS 

Capt. Harper capt;.. Holtw.l.ck 

Capt. Dermis 

Mr. Rowlett 

Ur. Kullbaok 

Dr. Campaign• 

Dr. :Eachus 

LCDR Gleason 

LCDR Hall 

}1!r. Friedman 

(Total: 2S) 

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d. AFSA personnel will eJXleavor to insure that SCAG members requiring transportation tram MSS to AUS ror the af't.ernoon technical session at 

AHS will be provided therewith. 'lbia should be taken care of before or 

during the luncheon period. 

6. In addition to the SCAG member•, the tolloviirlg peraonnel \'dll participate in the tour ot machine inetallationa at AHS (See para. 1, page 4 

or Agenda). (The assembly point will be Roam 1002. Buildinr. "A", at 1330 

hours): ·' 

m;A:O)a 

Capt. Harper 

Dr. Kullbaok 

Dr. Ocuia~6 

Dr. Eaobus 

'JA'iJii. G.l.d&.6')1& 

LCDR Hall 

Oh • Qichie.t·l~a 

7. a 0 '!he peraormel to be present. at. the discussion period indicated. 

to follow the tour (aee para. 2; page 4 or Agema), beginning at 1430 hours, 

in Room 2010, Building "B", AHS, will be the same aa in attendance at th• 

aeadon indicated in Paragraph 5 .• a. abcmt. 

b0 Cottee will be served during this period. 

8. a 0 For the presentation regarding AFSA project. S"'EATER (aee parao 

3 a., page 4 ot Agenda), at 1530 hours in Room 2032, Bldg. nBn, the follcming will be present: 

SCAG 1118111bera: 

Dr. von 'Neumann 

Dr. Oairne 

Dr. Shamlon 

Or. E!igat.ran 

'Or. Tompld.ns 

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RSA personna11 

AF§A:Q21 

Ur. Lewnson 

Mr. Shepard 

Mr. Schmitt 

llr. Albert E. Boberta 

AF§A=Ols 

Dr. IWllback 

Dr. Camptrl.gne LCDR Gleo.son 

LCDR Hall 

b. For the presentation regarcl1ng electronic representation ot 

rotors (see para. 3.Jl., page 4 ot Apida), also scheduled tor 1530 hours 

in Room 2010, Bldg. "B" 1 the i'olloWing will be preoenta 

8CAG •m'bar11 

Dr. Potter 

f.11". Desch 

AFSA persoppe11 

14r. McPherson 

AFSA=021 

llr. Highlq 

llr. La.Wlesa 1~. Uo.roton 

AfSA=Ols 

Oo.pt. Harper 

Dr. Eachus 

Mr. Bosen 

Ur. DumeJ' 

llr., R.E. Gordon 

Mr. R. laoulton 

fir. Bowman 

Mr. A. Moul.ton 

llr. Friedman, AFSA•Oar 

9. In addition to all SCAG members, the following persons will 

attend the final sess:lon o.t 1630 hours, 5 June 19511 :ln the ASA Conference 

Boom, Bq Bldg., ABS (see paras. 4 and 51 page 4 of Agenda.)1 

Adm. Stone 

llr. Speakman 

Capt. Holtwick 

llr. Rowlett 

Capt. Harper 

Dr. Kullback 

Dr. Campalsna 

:r.ir. Friedman 

10. Record ot proceedincs will be kept b.1 Dr. Campaisno, assisted b.1 

LCDRa Gloascm and Hall. 

9 

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