National Museum of Nuclear Science & History
Royden Johannesson worked for the United States Engineer District Office.
George H. Cohen served as a 1st lieutenant in the 393rd Bombardment Squadron. He was regularly assigned to the B-29 Top Secret.
Mario A. Litterio served as a PFC in the 393rd Bombardment Squadron. He was a member of the ground crew on the B-29 Full House.
Johnson worked at the 200 West Area at Hanford during the Manhattan Project.
