J. M. Blackburn

James M. McBride

Morton David

Morton David was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

M. C. Barto

M. C. Barto worked for the Roane-Anderson Company.

Celeste Hand

Celeste Hand was a switchboard operator at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.