Zelmar Barson

A. A. Uebelacker

A. A. Uebelacker worked for the Edenfield Electric Company.

E. M. Grant

E. M. Grant worked for the Roane-Anderson Company.

Charles R. Brower

Ambroso Hoelscher

Ambroso Hoelscher was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.