t 

I • REF ID:A69051 

• THE COMMANDANT, U. s. COAST GllNUJ 

AND REl'ER lO HO. 

TREASURY DEPARTMENT 

HEADQUARTERS CUNJ'IDEN'f lAL 

UNITED STATES COAST GUARD 

WASHINGTON 15 July, 1941. 

MEMORANDUM FOR DR. KUL'LBA.OK: 

Three more of the messages in the BRAJ'OB-VOLCO system.have 

been solved by this section, and are inclosed herewith along with 

indicators and keys. I am glad to say that I can now add some information to that given in I1J¥ memorandum. of 4 April, 1941. 

A revised grill is also being inclosed, which shows more accurate location for cells into which nulls are written. My earlier guess 

has been proved correct--i.e., that the last letter ot the indicator 

group signifies the corner of the grill (B, D, F, or R) which constitutes 

the upper lef't corner of' the diagram. The two corners which have been 

identified so tar are marked with the proper letter. 

It is now fairly apparent that the first three letters of the 

indicator give the key to be used, either from a numbered list of keys, 

or, what is more probable, the page of a book from which the key is 

derived in a manner familiar to you. The letters are numbered in accordance with their position in the alphabet, "A" being "One", "B", "Two", 

etc.; and quite probably,!!! letters beyond ~I" represent zero. If this 

is not true, the fourth letter of the indicator is entirely meaningless, 

as it will be noted that all three massages read by the same key, although 

all three indicators show a different fourth letter. Message l and 2, 

although having the same key as Jro. 3, used the grill with corn.er "B" in 

the u,pper left-hand position, whereas message No. 3 had corner "D" in 

this position. 

It is possible that a general solution tor this type of message, 

where the grill and its position are knowD. but the key unknown, can be 

worked out, similar to the general solution of the double columnar transposition. Any ideas you may have a1ong this line would be appreciated. 

R£.~. R. 1. aomm 

Declassified and approved for release by NSA on 12-19-2013 pursuantto E .0. 1352a 
18 March, 1941. 

TO VOLCO, MEXICO CITY I 

Indicator: B D B Y B 

Key : 5- 7- 1-12- s- 2-13-10- 6- 3-ll- 4- 9 

XSPRUQVOMXZWOFUENFXZWOXDERDORT 

MITZUENTS~LUESSELNWARXNEUVERSG 

LUESSELUNGXERSTENSXREAKTIVIERU 

NGENBISKRIEGSENDEAUSGESETZEXEN 

TDGEIDUNGERSTNAQKRIEGSENDEXZWO 

TENSXSWEDISQEDECKADRESSETFROEK , ENXFROEKENXULLAXULLAXGEINRIHXM 

OBERGXMOBERGXSTYRMANNSGATANXST 

YRMANNSGATANXZWOEINSXSTOCKHOLK 

XSTOCKROLMXDRITTENSXFRAUUND~UN 

GELASSENGRUESSENSX 
TO BRA.J'OB, BERLIN 

Indicator: B D B T B 

REF_ ID: A6905. 

JmSSAGE NO. l 

18 December 1940. 

Kef : 5- 7- i-12- e- 2-13-10- 6- 3-ll- 4- 9 

NRXZWOXUNSERSENDERXGLENNXWIRDX I 

ABXAUFBITTEXHILGERTXAU,FUERANR 

UFXNEWYORKXUHTERXGBOXZURVERFUE 

GUNGSTEHENXGL~NHKANNXZZTXNURSE 

NDENAUFXVIERZ~HNFUENFNULLAQTXA 

NRUFENNYXAMXZWONULLUNDZWOEINSX 

DEZX~REIUNDZWANZIGUBRXMEZVERST 

' 

A :It N D I G T D A H E R X H B G X W E .G E N X T R A M P X K 

.A.XU:MORIS 
REF ID:A6905. 

KESSAGE NO. 3 

25 March, 1941. 

TO VOLOO, MEXICO CITY 

Indicator: B D B Z D 

Key : 5- 7- 1-12- a- 2-13-10- 6- 3-11- 4- 9 

wiITEREFESTSTELLUNGEBNUEBAERZE 

ITZUENDERBOMBDEACUFXFOFRISBAKK 

XFORISBANKXINSBESONDEREURHGEBE 

RIMEINZELNENDRYINKGENDBERIQTEN 

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REF ID:A69051 & 

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.... 

NOTES ON ATTACHED GRILL: 

'!!his is the grill used b7 the B R A J 0 B -

V 0 L 0 0 people. The cells outlined in red indicate 

that nulls are written into these places. The cells 

crossed out indiCA.te those in which letters cannot be 

written. The bonifide letters of the message are written in the diagram horizontall7 from left to right in 

the cells not crossed out, and taken out in the ma..'lner 

described in m7 memorandum of 4 April, 1941. 

B.. :r.. Gordon 
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