National Museum of Nuclear Science & History
John Willard was a research associate at the Chicago Met Lab during the Manhattan Project.
McCook worked in the 200 West Area at Hanford during the Manhattan Project.
Cleo Wangsness was a staff worker at Los Alamos during the Manhattan Project.
Gertrude Nissenbaum was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.