National Museum of Nuclear Science & History
Parr worked in the 200 East and 100 D Areas at Hanford during the Manhattan Project.
D. A. Parker worked for the Edenfield Electric Company.
Ruth Hoffberg was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
N.F. Bowman was a consultant at the Metallurgical Laboratory in Chicago during the Manhattan Project.