R. K. Whalen

Marcellus H. Fricke

C. H. Smith

C. H. Smith worked for the J.A. Jones Construction Company.

Grace R. Harvey

Grace R. Harvey was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Bergen McCormick

Bergen McCormick worked for the J.A. Jones Construction Company.