William J. McGraw

Opaline Calhoun

Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

C.E. Nelson

Esther Turovlin

Esther Turovlin worked on the Manhattan Project at Chicago as a secretary, including for Enrico Fermi.

J. R. Baskin

Baskin worked in the United States Engineer District Office.