Letter written by US President Franklin D. Roosevelt (1882-1945) to the Director of the US Office of Scientific Research and Development Vannevar Bush
Letter written by US President Franklin D. Roosevelt (1882-1945) to the Director of the US Office of Scientific Research and Development Vannevar Bush (1890-1974) regarding progress of the Manhattan Project. The Manhattan Project was the American project to design and build the world's first atomic bomb during World War II.
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