National Museum of Nuclear Science & History
G. L. Crutchfield worked for the Edenfield Electric Company.
Stewart worked at the 100-F Area at Hanford during the Manhattan Project.
Helene Stark was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Gus Essig began working on the Manhattan Project in May, 1946 in Dayton, Ohio. Essig was selected to work in the highly classified initiator program and spent several months at Los Alamos learning how to design and construct initiators.