National Museum of Nuclear Science & History
C. H. Lawson worked for the Roane-Anderson Company.
Ethaline Hartge Cortelyou was a junior chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Cowan worked at the 100-B Area at Hanford during the Manhattan Project.
R. Y. Blackwell worked for the Fercleve Corporation.