National Museum of Nuclear Science & History
P. D. Simpson worked for the Poe Piping & Heating 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.
T. M. Mitchell worked for the Roane-Anderson Company.
Edwards worked for Stone and Webster Engineering Corporation.