J.N. Hull

H. S. Traynor

H. S. Traynor worked for the United States Engineer District Office.

Clyde Fiddler

Clyde Fiddler was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

J. C. Heidbrink

J. E. McLeroy, Jr.

J. E. McLeroy, Jr. worked for the Comstock-Bryant Electric Company.