National Museum of Nuclear Science & History
Irl Schoonover was a staff worker at Los Alamos during the Manhattan Project.
Joseph Hirschfelder was an American physicist. He held doctorates in physics and chemistry from Princeton University.
John Henry Manley (1907-1990) was an American physicist. Manley worked on the Manhattan Project almost from its beginning, starting at the Metallurgical Lab at the University of Chicago.
D. R. Johnson worked for the Roane-Anderson Company.