Ambrose Knapinski

William D. Steadman

William Steadman was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.

Ruth McPherson

Bernice Feldman

Bernice Feldman was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Charles R. Dickson

Charles Russell Dickson worked for the Manhattan Project civilian contractor Tennesee Eastman Corporation as an administrative assistant from 1943 to 1946.