National Museum of Nuclear Science & History
H. E. Wentworth worked for the Roane-Anderson Company.
John Riddle was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Crossett worked for Stone and Webster Engineering Corporation.
Felipe was a staff member at Los Alamos during the Manhattan Project.
F. D. Ethridge, Jr. worked for Clinton Laboratories at the X-10 Reactor.