J. C. McLaughlin

M. M. Beckwith

Beckwith worked in the United States Engineer District Office.

Burnett Tedford

Clyde Fiddler

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

O. L. Koch

O. L. Koch worked for the Midwest Piping and Supply Company.