F. W. Holt

Jas B. Huff

Jas Huff worked for the United States Engineer District Office.

Roy V. Henderson

Roy V. Henderson was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

H. O. Arnold

H. O. Arnold worked for the Kellex Corporation at the K-25 Plant.

Morton H. Simons