County & township map of the state of Illinois. Side: 1 of 2
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County & township map of the state of Illinois., map, 1879; [Philadelphia]. (https://texashistory.unt.edu/ark:/67531/metapth310621/m1/1/?q=%221879~%22: accessed May 4, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting University of Texas at Arlington Library.