National Museum of Nuclear Science & History
Gudgeon worked for Stone and Webster Engineering Corporation.
Hilgeman worked at the 100-D Area at Hanford during the Manhattan Project.
Stewart W. Williams served as a 1st lieutenant in the 393rd Bombardment Squadron of the 509th Composite Group.
Harry Stephon was a gruard and sergeant in the U.S. Army at the Metallurgical Laboratory in Chicago during the Manhattan Project.
