Correspondence ("Top Secret") of the Manhattan Engineer District

"A series of formerly security classified "Top Secret" correspondence maintained by Major General Leslie R. Groves when commanding general of the Manhattan Engineer District from September 1942 to December 1946. The documents were placed in the series either because of their special interest to Groves or because of their high security classification. The correspondence, much of which is with high-level U.S. government or military officials, documents the Army's role in the development, production, and deployment of atomic weapons."@en
"A series of formerly security classified "Top Secret" correspondence maintained by Major General Leslie R. Groves when commanding general of the Manhattan Engineer District from September 1942 to December 1946. The documents were placed in the series either because of their special interest to Groves or because of their high security classification. The correspondence, much of which is with high-level U.S. government or military officials, documents the Army's role in the development, production, and deployment of atomic weapons."