National Museum of Nuclear Science & History
Parr worked in the 200 East and 100 D Areas at Hanford during the Manhattan Project.
L. D. Larkin worked for the H. K. Ferguson Company.
Joyce M. Hopkins was a research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Waverly Smith was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.