National Museum of Nuclear Science & History
Helene Smith was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Ayers worked at the 100 D Area at Hanford during the Manhattan Project.
Gunnar Thornton was a nuclear physicist and engineer that served in the Special Engineer Detachment (SED) at Los Alamos and on Project Alberta in Tinian.
Robert JS Brown was a member of the Special Engineer Detachment at Los Alamos. He worked under Don Hornig on the electrical aspects of detonation for the plutonium bomb.