Lawrence, E. O. (UCB)
Lilienthal, David (PUL)
Lippmann, Walter (YUL)
McCloy, John J. (Amherst College archives)
Niebuhr, Reinhold. (LC)
Oppenheimer, J. Robert (LOC and IAS)
Osborn, Frederick (HSTL)
Patterson, Robert (LC)
Peters, Bernard (Niels Bohr Archive, Copenhagen)
Roosevelt, Franklin D., Presidential Papers collection (Roosevelt Library)
Stimson, Henry L. (YUL)
Strauss, Lewis L. (HHL)
Szilard, Leo (UCSDL)
Tolman, Richard (Caltech)
Truman, Harry S., Presidential Papers collections (HSTL)
University of Michigan records of the theoretical physics summer schools during the 1930s
Urey, Harold (UCSDL)
Wilson, Carroll (MIT)
Atomic Energy Commission, National Archives
Manhattan Engineering District, Harrison-Bundy files, RG 77, NA