National Museum of Nuclear Science & History
Leonard Reed was a janitor at the Metallurgical Laboratory in Chicago during the Manhattan Project.
T. J. O’Donnell was the Shop Chief at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Ella Tyree was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Max Wishnefski worked for the United States Engineer District Office.
J. C. Freer worked for the Roane-Anderson Company.