National Museum of Nuclear Science & History
Charles Swenson worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Robert Serber (1909-1997) was an American physicist. He was recruited by J. Robert Oppenheimer to work on the Manhattan Project.
N. F. Smyth worked for the Kellex Corporation at the K-25 Plant.
Holman worked for Stone and Webster Engineering Corporation.