National Museum of Nuclear Science & History
Treadwell worked at the 100-B and 100-D Areas at Hanford during the Manhattan Project.
Nora Dene Lawson worked as a calutron operator at the Y-12 Separations Plant in Oak Ridge, TN during the Manhattan Project.
E. W. Dickard worked for the Edenfield Electric Company.
Marie Cardwell arrived in Oak Ridge in February, 1945. She was hired as the Document Librarian for the Y-12 Plant and held for the remainder of the Manhattan Project, and for several decades afterwards.