From: Tokyo (Togo)
To: Honolulu (Riyoji)
15 November 1941
(J19)
#111

As relations between Japan and the United States are most critical, make your "ships in harbor report" irregular, but at a rate of twice a week. Although you already are no doubt aware, please take extra care to maintain secrecy.

 
JD-1: 6991  25644                            (Y) Navy Trans. 12-3-41 (S)

 

(EXHIBITS OF JOINT COMMITTEE , EXHIBIT NO. 2 JAPANESE MESSAGES CONCERNING MILITARY

INSTALLATIONS, SHIP MOVEMENTS, ETC.)