National Museum of Nuclear Science & History
R. H. Cook worked for Clinton Laboratories at the X-10 Reactor.
Mason worked in the 300 Area at Hanford during the Manhattan Project.
John Smith was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Derward A. Stevens served as a corporal in the 393rd bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Strange Cargo.