Letter from Helliwell For Heppner to 154 for Knollenberg on the January 31, 1945 on the retaliatory measures taken by the Japanese against previous American attacks with the plan of disseminating typhoid and black plague germs.
Report by Richard H. Agnew on March 19, 1945 regarding the use of epidemic germs as war weapons and the shipment of bacterial bombs from Osaka to Shanghai in December 1944 and January 1945.
Report by Joseph K. Dickey on March 8, 1945 regarding epidemic germs as war weapons to be used in industrial areas of Chinese provinces and are developed in an Osaka chemical laboratory.
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.