"The weekly document is a letter from Vannevar Bush to James B. Conant, dated October 24, 1944, on the problem of the long-term control of biological warfare— not just because Bush thought it was important, but because he thought it would help make sense of what to do with the bomb.1. ... Bush started it off by referencing a “recent memorandum” to the Secretary of War Henry L. Stimson, which they had "

https://blog.nuclearsecrecy.com/2012/07/25/biological-warfare-vannevar-bushs-entering-wedge/