T. L. Lindgren

J. E. Dunbar

H. E. Remsburg

H. E. Remsburg worked for the Edenfield Electric Company.

H. R. Muldoon

H. R. Muldoon worked for the Union Carbide & Carbon Corporation.

Philip C. McKenna

Philip C. McKenna was a laboratory assistant the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.