National Museum of Nuclear Science & History
H. G. Arnett worked for the Roane-Anderson 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.
Jessen worked at the 200 East Area at Hanford during the Manhattan Project.
R. L. McDaniels worked for the Roane-Anderson Company.