Arthur L. Johnson

Leon Goodman

W. E. Dreeszen

Dreeszan worked in the United States Engineer District Office.

J. H. Leebens

J. H. Leebens worked for the J.A. Jones Construction Company.

Opaline Calhoun

Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.