Howard V. Johnson

Robert E. Brueckmann

E. H. Halbrook

E. H. Halbrook worked for the J.A. Jones Construction Company.

F. L. Casey

F. L. Casey worked for the J.A. Jones Construction Company.

Paul D. Krause

Paul D. Krause was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.