C. E. Zerwekh

H. M. Schenk

H. M. Schenk worked for the United States Engineer District Office.

James McIntosh

James McIntosh was a draftsman at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

R. S. Amrien

R. S. Amrien worked for the Union Carbide & Carbon Corporation.

Herman Esch