National Museum of Nuclear Science & History
W. A. Gracey worked for the Roane-Anderson Company.
Lee W. Trybell worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Mary Alice Nachtrieb was a chemist who worked at Los Alamos during the Manhattan Project. Her speciality was in plutonium chemitsry.
J. R. Siebert worked for the Comstock-Bryant Electric Company.
