United States. General Land OfficeShows lead and copper regions and 6 and 15 mile limits of land grant railroads.;1 map, colored;56 x 38 cm.;ca. 1:1,200,000JPEG2000https://digital.library.illinois.edu/items/9e95df20-994e-0134-2096-0050569601ca-aeng[s.l.] : General Land Office. (Phila[delphia] : Bowen & Co. lith.)PublicRailroadsMap of the state of Illinois.MapsIllinois1866University of Illinois Urbana-Champaign