National Museum of Nuclear Science & History
Homer M. O’Callaghan served in the 1st Ordnance Squadron.
H.A. Fettinger was a junior physicist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Cummins worked for Stone and Webster Engineering Corporation.
Attended New York University.
Harold R. Olson served as a private first class in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Enola Gay.