National Museum of Nuclear Science & History
Robert Williams was a staff worker at Los Alamos during the Manhattan Project.
Leon J. Brewster served in the 1027th Air Material Squadron.
Burr H. Ritter was a chemical engineer at the Hooker Chemical Company in Niagara Falls, New York during the Manhattan Project.
Petty worked in the 100 B and D Areas at Hanford during the Manhattan Project.
