National Museum of Nuclear Science & History
Johnston worked at the 300 Area at Hanford during the Manhattan Project.
Leona Woods, later Leona Woods Marshall and Leona Marshall Libby, was perhaps the most well-known woman scientist working on the Manhattan Project.
Arnold E. Sleipnes served as a techical sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Top Secret.
Jessen worked at the 200 East Area at Hanford during the Manhattan Project.
