National Museum of Nuclear Science & History
Paul Sperling was a staff worker at Los Alamos during the Manhattan Project.
Frederick H. Zimmerli served in Project Alberta.
Lawrence Kimpton was the Chief Administrative Officer at the University of Chicago Metallurgical Lab, serving there from 1943 to 1945.
Ben Benjamin was a sergeant in the Special Engineer Detachment during the Manhattan Project. He had previously worked in industry making lenses and prisms, and was assigned to the Optics Group to help with photographing the Trinity Test.
