National Museum of Nuclear Science & History
Lou Evelyn Weisser was a staff worker at Los Alamos during the Manhattan Project.
Litchfield worked in the 100 F Area at Hanford during the Manhattan Project.
Frederick Roach served in the Army at Los Alamos during the Manhattan Project.
Tappscott worked at the 100-F Area at Hanford during the Manhattan Project.
Martha G. Johnson was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.