[Secret]
From: Tokyo
To: Washington
1 December 1941
(Purple)
Circular #2436
When
you are faced with the necessity of destroying codes, get in touch with the
Naval Attaché's office there and make use of chemicals have on hand for this
purpose. The Attaché should have been advised by the Navy Ministry regarding
this.
25545
JD-1: 6939 (D) Navy Trans. 12-1-41 (S-TT)
(EXHIBITS
OF JOINT COMMITTEE , EXHIBIT NO. 1 INTERCEPTED DIPLOMATIC MESSAGES SENT BY THE
JAPANESE GOVERNMENT BETWEEN JULY l AND DECEMBER 8, 1941)