National Museum of Nuclear Science & History
Edna Sypult was a laboratory helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Opal MacDonald was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Snyder worked at the 300 Area at Hanford during the Manhattan Project.
Sara B. Chettkow was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.