National Museum of Nuclear Science & History
Victor Yack was a member of the Military Police at Los Alamos and at Sandia Base in Albuquerque from 1946 to 1947.
Helene Smith was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Arthur Watmough was an electrical engineer working for the DuPont Chamberworks Company in New Jersey from 1941 to 1947.
Cummins worked for Stone and Webster Engineering Corporation.