National Museum of Nuclear Science & History
Rolland Perry was a staff worker at Los Alamos during the Manhattan Project.
Arthur L. Hughes was an British/Welsh physicist. He worked on the Manhattan Project in St. Louis on the cyclotron and plutonium production and at Los Alamos, NM.
Alvin O. Weaver served in the 393rd Bombardment Squadron.
Lee Krejci worked for the United States Engineer District Office.