National Museum of Nuclear Science & History
Harold J. Rider served as a 2nd lieutenant in the 393rd Bombardment Squadron of the 509th Composite Group.
Leonard Reed was a janitor at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Gertrude Williams worked for the United States Engineer District Office.
Joseph (J.) Garrott Allen was a research associate in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
