National Museum of Nuclear Science & History
Edward Littleton was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
W. B. Caldwell worked for Clinton Laboratories at the X-10 Reactor.
Clarence M. Shepler served in the 393rd Bombardment Squadron.
Harold B. Nilling was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.