Scanned by
              Don Sailer, Dickinson College
          Scan date
              Notes
              Cropped, sized, and prepared for use here by John Osborne, Dickinson College, February 24, 2010. 
Image type
              map
          Source citation
              Mitchell's New General Atlas....  (Philadelphia: S. Augustus Mitchell, 1866), 38.
          Source note
              Cropped from the larger original image of the state of Illinois, also available here.