. . ... 

DRAFT 

SPECIAL CRYPTOLOOIC ADVISORY GROUP 

(SCAG) 

Agenda 

for 

Second Conference of SCAG 

10~~51 

1)(~-::i:.::..~1h'"''! !::t ;;~5J;./fSS 

~l'/ A;\..r,oc..;;,ne L;i'"~'t.i' tor Poiic) and Rt.~m 

Oft ;)tJf307')1 by ~ 

Enclosure to AFSA-OOT's Memorandum dated 21 June 1951 

1 

-TOP SECRET 

Declassified and approved for release by NSA on 12-18-2014 pursuantto E .0. 1352a 
Time: 

Place: 

e ~roP~4iiq3ii9 

DRAFT 

,,~~L'frl 

··ii~ t' \ ?6 4'td:)5 l9'i 

9:00 A.Mo)7~a J??...o 

etttcagt the Dtractop1Armed-F-oreee ~ene;v; · 

Room m., Build1ng-l9; Na.val Security Station, ,3801 Nebraska 

Avenue, North West, Washington 

1. Welcoming remarks ~ 

Rear Admiral Earl E. Stone, USN, Director, AFSA LIJ 4 ~ 

/ / ~~e... ~ .. 2o Resume ot ground cove. red at First Conference a.mi· gene~ { !}:"" vi'Gw ~i~sbeFEeevet=eE1:-at. this Conference -. . . . . 

Capto J. S. Harper, USN, Chief, Office of Research 

and Development., AFSA 

--b.,=Question.o.andc-Oiscussi:on:~period."' 

b. '!he Canbined Cipher Machine (CCM): ~ 1:-s A 

. '"'fvu...._, ~/\-~A-~~ IT\"" l'"l •4\ ~ te be designated by~or--etff 

do;-· -.. · Ques!:'on~and* discu~ion'""peiod * ~AG"1DE11r:bars =and~-conr-ereea~ 

- . L-U N C.14 EO M . 

( Executive dining room, Naval Security Station Cafeteria) 

~ ~ 'Jt. ~ *"' 2 

TOP SECRET 
a_.~ Bambe.:·~~ ~-- ... ) . 

b' .(-2? ~~~ '.:'- '' 

(Duri11g this period it is des~ed that each SCAG 

member indicate the specific segment or tha field 

or special interest to him; what additional 

information or briefing he desires; what he wishes 

to concentrate on, etc.) 

TOP SECRET 
Time: 

Place: 

. ,. Met J .. ~of 11 Jul.7 'fq r"J ·1·. " 

ib'll~t;lt"\.\ilt~R~;,. ~:,. L . a_.~ Bombe -

h, ~Duenna -

~.J.J>~ 

~ .......... -----.. -- /i,.N<J~.·-- '~ 

e,, RY/ Seri tcher -

~.!M Warlock -

"' 

ff 

Pl"'. {C. ~~'"-

R_.~ Message setting ~-n.-...n......a..--=ff-

~~·~~ 

(~7·~ - /'\ 

4 

TOP SECRET 
~ · .. ~ 

{J, I;. A ~B on electronic representation of /\rotors: 

~f&mo be ee itesigmbed) f CP ~ n '\· t- ... . . \.; "}- -~ ........ 

'le· . . } , . . s_., . .JJP'lwnsWsan &Bda!tceueean~ , ) 

{flwne ~a cteft@J&t~ - f-.f,~R1f1. ~~~ . 

~ am- d:tecmssion-=periad !-..c,J)fA·\~-e°'<f4~ 

Sessions after 11~1951:: Individual visits to working asctiono and diacuoeions with 

technical personnel engaged in working on specific problems 

in the field of interest. 

!~ . .;. .. [c; (, 1 Final Session 

(j 1j 

(To be decided later. At this session it.will be deairable 

to discuss with SCAG ,fominees for ad.di tional membership.) 

. . l~~1J'·. 

5 

TOP SECRET 
,,-. · .. REF ID:A4163i119 

' ~ 

SECRET 

SPECIAL CRYPTOLOGIC ADVISORY GROUP 

(SCAG) 

Agenda· 

for 

Second Conterence of SCAG 

Opening on 

10 July 1951 

l 

SECRE.T 
... ·· 

REF ID:A4163il&9 

.. 

SECRET 

Agenda for 10 July 1951 

Time: · 9:00. A.Mo. 

·Place: Room 202, Building 20, Naval Security Station, .3SOl Nebraska 

Avenue, North.West, Washington. 

1. Welcoming remarks: 

Rear Admiral Earl E. Stone, USN, Director; AFSA; 

Mr. F.d.win A• Speakman, Executive Director, Committee on 

Electronics, RDB; and · 

A representative of the Director of Central Intelligence 

2o Outline of program for this Conference: 

Gapto J. s. F..arper, USN, Chief, Office of Research and 

Development, AFSA 

.30 PrE)sentation on certain cryptographic deviceso 

* * * * * 

LUNCHEON 

(Executive dining X'oom, Naval SecUFlty Station cafeteria) 

* * * * 

4o ·Discussion of logical design of certain machines used as aids. in 

the solution of cryptographic problems. 

2 

SECRET 
.... ; 

Time: 9:00 A.M. 

REF ID:A416371l9 

,., 

Place: Room 0200, Building nBu, Arlington Hall station. 

S. Discussion of. engineering design and problems in the construction 

and functioning ·of certain machines used as aids in solution of 

cr.vptographic problems. 

* * * * * 

LUNCHEON 

(Executive dining room, AHS Cafeteria) 

* * * 

6 o Seminar OJl electronic representation of rotors. 

7. Seminar on known mathematical prineipl.GJs. ot rotors. 

Sessions after 11 July- 1951: 

Individual visits to working sections and discussions with technical 

personnel engaged in working on specific problems in the field of 

interest. 

Final Session 

(To be decided latero At this session it will be desirable to discuss with SCAG their recommendations for nominees for additional 

membershipo) 

SECRET 
.. REF ID:A416311&9 

'19' 

SECRE·r 

SPECIAL CRYP'l'OLOGIC ADVISORY GROUP 

(SCAG) 

Age rid a 

ror 

Second Conf'erence of SCAG 

Opening on 

10 July 1951 

1 

SECRET. 
REF lD:A416371&9 

., 

SECRET 

Agenda for 10 July 1951 

'Time: . 9:00 A.M. . . . . . 

Place: Room· 202, Building 20, Na.val Security Station.I' '3801 Nebraska: 

Avenue, North·West, Washington. · 

1. Welcoming .remarks: 

Rear Admiral Earl E. Stone, USN, Director; AFSA; 

Mr. Edwin A-., Spealmlan, Executive Dil"ector, Committee on 

Electronics, RDB; and 

A representativo of the Dire~tor o.f' Central Intelligcmce ·. 

. 2. Outline of program for thie Conference: 

Capt. J. s. Harpe~, USN, Chief, Office of ReseD.Tch and 

Development, ~SA · · 

. 3. Fz'~scmtation on certain ceyptog1-aphic devices. 

* * *' * * 

LUNCHEON 

(Executive· dini.rig :!'oom, llaval SecUl"H,y Stat.ion Cafeteria) 

* * * * * 

• 4. Discussion of logical design of ce,;, .. ·t.ain machines .used as aids. in 

the solut.ion of cryptographic problems. 

2 

SECRET 

·:,.; 

·, 
Time: 9:00 A.Mo 

REF ID:A4163711l9 

,., 

SECRET 

11Juq1951 

Place: Room 0200, Building nan, Arlington Hall station. 

S. Discussion of engineering design and problems in the construct.ion 

and functioning of certain machines used as aids in solution ot 

cryptographic problems. · 

* * * 

WNCHEON 

(Emcutive dining room, AHS Cafeteria) 

* * * 

6. Seminar on electronic represantation of rotors. 

7 o Seminar on known mathematical principles of rotors. 

Sessions after 11 J~ 1951: 

Individual visits to working sections and diecueeione with technical 

persomwl engaged in working on specific problema in the field of 

interest. 

Final Session 

(To be dscid0d later. At this session it will be desirable to discuss with SCAG their recommendations tor nominees for additional 

membership.) 

SECRET 
, . ' .. REF ID:A4163i.J9 

., 

SECRET 

SPECIAL CRYP'roLOGIC ADVISORY GROUP 

(SCAG) 

Agenda 

for 

Second Conference of SCAG 

Opening on 

10 July 1951 

1 

SECRET 
.·• REF ID:A4163i.19 

., 

SECRET 

Agenda tor 10 July 1951 

Time: 9:00 A.Ma . ·Place: Room 202, Building 20, Naval Security station.11 .3801 Nebraska 

Avenue, Nort.h West, Washington. 

1. Welcoming remarks: 

Rear Admiral Earl E. stone, USN, Director; AFSA; 

Mr. Fdw:in A. Speakman, Emcutiw Director, Committee on 

Electronics, RDB; and 

A representative of the Director of Central Intelligence 

2. Outlins of program for this Conference: 

Capt. J. s. Harper, USN, Chief, Office of Research and 

Development, AFSA 

3. Presentation on certain crn>tographic devices. 

* * * * * 

LUNCHEON 

(Exscutive dinillg room, NaWl Security station Cafeteria) 

* * * * 

1+. Discussion of logical design o£ certain machines used as aids in 

the solution of cryptographic problems. 

2 

SECRET 

) 
.• 

i. . ... 

Time: 9:00 AoMo 

REF ID:A41637"9 

.. 

SECRET 

11Juq1951 

.Place: Roam 0200, Building "B", Arlington Hall station. 

5 D Discussion or engineering design and pr0blems in the construction 

and functioning ot certain machines used as aids in solution of 

Cr.?J>tographic problems. 

* * * * * 

LUNCHEON 

(E:m&cutive dining room, AHS Cafeteria) 

* * * * 

60 Ssminar on electronic :representation of rotors. 

7 o Send nar on known mathematical principles of rotors. 

Sessions after 11 Jul7 1951: 

Individual visits to working sections and discusaions with technical 

personnel engaged in working on spacif ic problems 1n the f'ield of 

interesto 

Final.Session 

(To be decided latero At this session it will be desirable to discuss with SCAG their recommendations for nominees tor additional 

membership.) 

SECRET