National Museum of Nuclear Science & History
J. N. Holt worked for the United States Engineer District Office.
Edna K. Marks was a junior biologist and technician in the Health Division at the University of Chicago Met Lab.
Thomas Cowley was a Military Policeman assigned to Post Security at Los Alamos, New Mexico during the Manhattan Project.
L. J. Ritter worked for the Roane-Anderson Company.
