Burgess F. Collins

H. F. Zimmerman

H. F. Zimmerman worked for the J.A. Jones Construction Company.

E.E. Riggin

Robert Gustison

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

J. J. McPeake

J. J. McPeake worked for the H. K. Ferguson Company.