William H. Wren

Martha G. Johnson

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

J. A. Elkins

J. A. Elkins worked for the Edenfield Electric Company.

M. M. Wainscott

George McNamee

George McNamee worked for the Tennessee Eastman Corporation at the Y-12 Plant.