National Museum of Nuclear Science & History
Clarence Signaigo was a laboratory helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Colleen Frahm Lockmiller was a lab technician in the Y-12 Plant at Oak Ridge, Tennessee from 1944 to 1947.
Ivan Behymer came out from the Dupont 'black powder' plant in Illinois to Richland, Washington (Hanford) in March of 1943.
W. H. Leedom worked for the Roane-Anderson Company.