National Museum of Nuclear Science & History
H. G. Singleton worked for the Roane-Anderson Company.
Hirst worked at the 100-D Area at Hanford during the Manhattan Project.
Vivian Stark was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Audrey “Bud” Learn Aeby was a staff member at Los Alamos during the Manhattan Project.