National Museum of Nuclear Science & History
Ed Helfenberger worked for the Roane-Anderson Company.
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.
Ethol Strom was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Jas Nevils worked for the Roane-Anderson Company.
T. W. Brownback worked for the Red Cross.
