National Museum of Nuclear Science & History
H. W. Butsch worked for the William A. Pope Company.
Marion Mandel was a laboratory technician in the Health Division at the University of Chicago Met Lab.
Joseph S. Dispensa served in the 393rd Bombardment Squadron. After the war, Dispensa was assigned to the Japan Atomic Bomb Damage Survey teams.
Harry Stephon was a gruard and sergeant in the U.S. Army at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Tom Mulcahey was a staff worker at Los Alamos during the Manhattan Project.
