George W. Ellis

Walter M. Longfelt

Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

J. R. Siebert

J. R. Siebert worked for the Comstock-Bryant Electric Company.

Clarence C. Simpson

Françoise (Aron) Ulam

Françoise (Aron) Ulam was the wife of mathematician Stanislaw Ulam, who worked for the Manhattan Project in Los Alamos, NM during World War II.