National Museum of Nuclear Science & History
Harry Reason was a janitor at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Blum worked in the United States Engineer District Office.
H. L. Russell worked for the United States Engineer District Office.
G. E. Knutson 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.