L. R. Zumwalt

James McIntosh

James McIntosh was a draftsman at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Edward Wilder, Jr.

Edward Wilder, Jr. worked for the United States Engineer District Office.

G. T. E. Sheldon

C. W. Russell

C. W. Russell worked for the J.A. Jones Construction Company.