H. C. Crose

Henry J. Wollweber

Henry J. Wollweber was a guard at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.

Robert A. Berardo

Robert A. Berardo served in the 509th Headquarters and Base Services Squadron. 

Opal MacDonald

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

E. B. Ethridge