National Museum of Nuclear Science & History
B. Cogswell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Wilber A. Stevens was an army officer in charge of overseeing construction at Los Alamos. He helped choose the site where the Manhattan Project would test its first atomic bomb.
C. C. Sperling worked for the Edenfield Electric Company.
Johnston worked at the 200 West Area at Hanford during the Manhattan Project.