National Museum of Nuclear Science & History
J. D. Gibson worked for the Roane-Anderson Company.
George S. Monk was a physicist at the University of Chicago Met Lab and an expert on optics. He was married to the mathematician Ardis Monk.
Leon D. Smith joined the Manhattan Project in 1944 and was assigned to the 509th Composite Group at Wendover Airfield in Utah.
Ernest C. Lawrence was a millwright at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.