National Museum of Nuclear Science & History
Ed Helfenberger worked for the Roane-Anderson Company.
Chester J. Krajewski served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Top Secret.
Jean Wallace was a research assistant in the health division of the Chicago Met Lab during the Manhattan Project.
Stanton B. worked for the Tennessee Eastman Corporation at the Y-12 Plant.
