National Museum of Nuclear Science & History
L. T. Roberts worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Houston worked at the 200 East Area at Hanford during the Manhattan Project.
Watt worked at the 200 West Area at Hanford during the Manhattan Project.
Mark Fred was a research assistant in the chemistry division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Marjorie Richmond was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.