National Museum of Nuclear Science & History
Mollie Sprio was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Oscar Moore worked for the United States Engineer District Office.
A. G. Underwood worked for the J.A. Jones Construction Company.
Marilyn (Evans) Howe was a research assistant in the Technical Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.