National Museum of Nuclear Science & History
Sherwood Johnston worked for the Roane-Anderson Company.
Hinginio A. Baca 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 Big Stink, and he and his crew were later reassigned to Luke the Spook.
Zweifel worked at the 200 East Area at Hanford during the Manhattan Project.
N.F. Bowman was a consultant at the Metallurgical Laboratory in Chicago during the Manhattan Project.