National Museum of Nuclear Science & History
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.
Albert Steiner was a staff worker at Los Alamos during the Manhattan Project.
H. A. McFadden worked for the Roane-Anderson Company.
