National Museum of Nuclear Science & History
Edna K. Marks was a junior biologist and technician in the Health Division at the University of Chicago Met Lab.
William R. Crotty served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Some Punkins.
Richard Emanatian was with the military police detachment at Los Alamos during the war. He maintained secrecy through the rest of his life, and his family only found about his involvement long after his death.