National Museum of Nuclear Science & History
Morris Jackson worked for the United States Engineer District Office.
M. L. Olsgaard worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Opal MacDonald was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Albert Hoersch, Jr. worked for the United States Engineer District Office.
Margaret H. Sanderson was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.