County map of the state of Illinois. Side: 1 of 2
Reference the current side of this Map.
County map of the state of Illinois., map, 1874; [Philadelphia]. (https://texashistory.unt.edu/ark:/67531/metapth298659/m1/1/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting University of Texas at Arlington Library.