Robert J. Klotzbach

Okey B. Ellison

Okey B. Ellison was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Donald L. Sheets

Donald L. Sheets served in the 603rd Air Engineering Squadron.

John Heer

Celia Szapka Klemski

Celia Szapka Klemski was working as a secretary for the State Department in Washington, DC when she was transferred to Manhattan to work on the Manhattan Project in 1942.