National Museum of Nuclear Science & History
Norene Mann was a secretary at the University of Chicago Met Lab. She worked for Nobel laureate James Franck, but often also acted as a secretary for Leo Szilard.
Herbert M. Lehr was a member of the Special Engineer Detachment who worked at Los Alamos during the Manhattan Project.
Ray Belcher served in the 1395th Military Police Company, Aviation.
B. G. Rowland worked for the United States Engineer District Office.