National Museum of Nuclear Science & History
DeRenzis worked in the United States Engineer District.
Al Threadgill worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Elsie Mae Freeman was born in Missouri in 1900. She graduated high school in Chicago. After graduating, Elsie was recruited to work in a lab at the University of Chicago in 1919.
D.C. Stewart was a Staff Sergeant in the Special Engineer Detachment at the Metallurgical Laboratory in Chicago during the Manhattan Project.
