National Museum of Nuclear Science & History
W. B. Humes worked for the Edenfield Electric Company.
Josephine Minch was a research assistant in physics at the University of Chicago Met Lab.
Graham worked at the 300 Area at Hanford during the Manhattan Project.
Houston Willson worked for the United States Engineer District Office.
Joyce M. Hopkins was a research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.