Frank J. Darwas

C. D. Brown

C. D. Brown worked for the Edenfield Electric Company.

Annie Patterson

Annie Lee Patterson was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

C. H. Holt

Nellie Jennings

Nellie Jennings was a laboratory assistant at the Metallurgical Laboratory at the University of Chicago during the Manhattan Project.