William J. Hannert

Marguerite Anderson

Marguerite Anderson was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.

Arthur J. Monroe

M. A. Mostyn

M. A. Mostyn worked for the Roane-Anderson Company.

Estelle B. Lucas

Estelle B. Lucas was a laboratory assistant in the Chemistry Division at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.