National Museum of Nuclear Science & History
James Roberts was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
H. B. Malter worked for the Edenfield Electric Company.
Frank Schaupp worked for the United States Engineer District Office.
Marjorie Hall Bradner was a secretary at Los Alamos during the Manhattan Project. She was also the wife of Los Alamos physicist Hugh Bradner.