National Museum of Nuclear Science & History
F. A. Thomas worked for the Edenfield Electric Company.
Ella Tyree was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
V. E. Helgesen worked for the William A. Pope Company.
Jas Hoff worked for the United States Engineer District Office.
Frank Graham worked for the Midwest Piping and Supply Company.
