National Museum of Nuclear Science & History
William Haag was a member of the Special Engineering Detachment at Los Alamos from August 1945 to the end of 1946.
George Cowan joined the Manhattan Project in 1942 at the Met Lab as a chemist for Enrico Fermi’s group, and also worked for Columbia University.
Raymond G. Knapp served in the 1st Ordnance Squadron.