H. A. Laybourn

Helen H. Thompson

Melvin S. Friedman

Melvin S. Friedman was an associate chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Esther Floth

Esther (Green) Floth worked as a secretary for General Leslie Groves during the Manhattan Project in Washington, DC.

Elwin O. Christain