National Museum of Nuclear Science & History
John Brolley was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Gahan worked in the United States Engineer District Office.
L. C. Schroeder worked for the Oak Ridge Recreation and Welfare Association.
J. S. Hart worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Helen R. Hughes was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.