Edgar B. Stein

Patricia Lear

Patricia Lear was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

E. O. Ogle

E. O. Ogle worked for the Edenfield Electric Company.

Walter Groeger

Walter Groeger worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Leonard M. Tracy