National Museum of Nuclear Science & History
Olga Nelson was a staff worker at Los Alamos during the Manhattan Project.
Gilbert worked in the United States Engineer District Office.
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.
C. K. Farris worked for the Tennessee Eastman Corporation at the Y-12 Plant.