Walter A. Stippler

John E. Yenzer

W. N. Sparke

W. N. Sparke worked for the J.A. Jones Construction Company.

E. P. Kelleher

Kelleher worked for Stone and Webster Engineering Corporation.

Doris Dixon

Doris Dixon was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.