National Museum of Nuclear Science & History
Stanley Thomson was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Kenneth Greisen was an American physicist. He worked on the Manhattan Project at Los Alamos. He was the leader of Group X-1A (Photogoraphy with Flash X-Rays) until it was dissolved in May 1945.
Leland worked in the 200 E Area at Hanford during the Manhattan Project.