National Museum of Nuclear Science & History
Parr worked in the 200 East and 100 D Areas at Hanford during the Manhattan Project.
Myrtle E. Karcher was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Helen Warren worked for the Edenfield Electric Company.
Arnold graduated from Northwestern University in 1941 with a B.S. degree in Biology and a minor in Chemistry.