0 REF ID:A41489450 

No. l. September 23, 1918. 

REGULATIONS .FOR mE TEST OF THE PRINTING TEJ.mnRAPli CIPHER. 

The test ordered. by the Chief of Sta.ff begins 9:00 a.m. Monday September 23, 1918. 

The instruments at both the Washington and New York ends of the line 

be ma;rm~ daily except ~day from 9:00 a.m. to 1:00 p.m. and from 2:00 p.m. 

to 5:00 p.m. 

Messages for transmission will be received from the Cable section of' 

the General staff. Each message will be enclosed in a. separate envelope 

bearing the nlllli>er of the message. Each ·message will be transmitted in code. 

The envelope oontaining the message will not be opened until just prior to 

putting 1 t on the atpber attachment. Ea.ch message received for transmission 

w.tll be returned to the Cable Section of the General Staff with the fol.lowing times noted on the oa.ok of the message: 

Time envelope containing message is opened ••••••••••••••••••••••••••••• 

Time coding is complete •••••••••••••••••••••••••••••••••••••••••••••••• 

Time message is placed on the wire••••••••••••••••••••••••••••••••••••• 

Time transmission is complete •••••••••••••••••• ~··••••••••••••••••••••• 

A copy of each message as reoei ved over the wire in code, with a. copy 

of the English translation attached, will be sent to the Oable Section of 

tm General Staff' 'With the t·ollowing times noted on the back of the E:oglish 

message: 

Time message started to come over the wire ••••••••••••••••••••••••••• · •• 

Time transmission COlT\Plete ••••••••••••••••••••••••••••••.•••••• ••• ••• ••• 

Time message decoded ••••••••••••••••••••••••••••••••••••••••••••••••••• 

Time sealed in evelope.~or m:-~1liDg to Oable Section •••••••••••••••••••• 

Messages will be mailed from the New York end of the line as soon as 

practicable after sealing in the envelopes. 1.l:he envelope should be addressed:1 Colonel w. K. Wilson, General Staff, C~bl~ Section, Room 116, State 

War and Na.vy Building, WashiDgtxm, D. c. 

Messages will be deli v~red by messenger from the W'a.shi:ngton eno. of. the 

line. 

During the test there will oe a number of regular official ms~sages 

transmitted. In addition to sending copies of the messages to the Cable 

Section as described above, a copy will be delivered to the person addressed a.s soon as practicable after the messag~ is decoded. The copy thus 

furnished will be in English c..m the coded message will not accompany the 

English translation. To distinguish messages intended for delivery from 

@'pp roved for Release by NSA on 11-19-2014 pursuantto E .0. 1352S 
0 ~F ID:A414894D 

-2-

those used f'or test purposes only, the following :.rnntence will be sent before each such mess<.ige: "Deliver the following message to ••••••••••••••• •,• 

••••••••••••••••••••••• wllo se address 1 s • •••••••••••••••••••••••••••••••••• 11 

On the copy of. such a message which is, sent to the Cable Section will be 

noted the time delivery. is made in a.dd.tion to the other times required. 

In order to synchronize tht time pieces at each end 01· thelline, the 

wa.shi11ton instrmnent V'.d;ll send a time signal daily except Sundays at 9:10 

a.m. his will be considered as the o:f:ficia.1 time for t.h.at da.y. · 

Signed w. K. Wilson, Colonel General Staff, 

Joseph o. Ma:tiborgrie, Lieutenant Colonel, Signal Corps, 

ln charge of TES!!?.