National Museum of Nuclear Science & History
J. D. Brown worked for the Watson-Flagg Engineering Company.
Donald D. Piehl served as a corporal in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Big Stink, and he and his crew were later reassigned to Luke the Spook.
Rex E. Gunderson served in the 603rd Air Engineering Squadron.
Clyde R. Emery worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.