National Museum of Nuclear Science & History
Gonzalo Williams was a staff worker at Los Alamos during the Manhattan Project.
Clarence Grover Sproul worked as a machinist on the Manhattan Project in Los Alamos, NM from January through June 1945.
William T. Hulse, Jr. was with the 393rd Bombardment Squadron of the 509th Composite Group at Wendover Airfield in Utah and on Tinian Island in the Pacific from 1944 to 1945.
Frederick Trapnell was a consultant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
