Letter from John Edgar Hoover, director of Naval Intelligence regarding German doctors teaching Japanese the art of bacterial warfare dated January 30th, 1942.
Memorandum for Information by the Joint Committee on New Weapons and Equipment on June 16th, 1944; concerning the current intelligence and the difficulties the committee is experiencing.
The Joint Chiefs of Staff's radio communications to the Supreme Commander for the Allied Powers about Russian prosecutors requesting to interrogate Japanese individuals from March 6th, 1947.
Report on the Japanese preparations for bacteriological warfare in China, dated December 12, 1944. Information was provided by a Japanese prisoner of war, having worked at the Water Supply and Purification Unit in Nanking and Kuikiang.