National Museum of Nuclear Science & History
William Stephenson worked for the J.A. Jones Construction Company.
I. H. Jacobson served in the 390th Air Service Group.
John Mihalkanin was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Arthur Scott Weygandt was a chemical engineer at DuPont.
C. E. Winters worked for the United States Engineer District Office.
