National Museum of Nuclear Science & History
Ralph E. Telford worked at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Howard “Howie” Wilcox was an American physicist. He studied at the University of Minnesota and was a teaching fellow at Harvard when he was recruited to work on the Manhattan Project at Los Alamos.
Cofer worked in the United States Engineer District Office.
Fred R. Williams worked for Clinton Laboratories at the X-10 Reactor.
H. R. Chapman worked for the H. K. Ferguson Company.