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| ==Online Resources== | | ==Online Resources== |
| *See [[United States Maps]] for more resources. | | *See [[United States Maps]] for more resources. |
| | *[https://publications.newberry.org/ahcb/pages/Illinois.html Atlas of Historical County Boundaries] at the Newberry Library |
| *[https://www.usgs.gov/core-science-systems/ngp/board-on-geographic-names Geographical Names Information System] | | *[https://www.usgs.gov/core-science-systems/ngp/board-on-geographic-names Geographical Names Information System] |
| *[http://www.lib.utexas.edu/maps/illinois.html Historical Maps of Illinois (Perry Castañeda Collection)] | | *[http://www.lib.utexas.edu/maps/illinois.html Historical Maps of Illinois (Perry Castañeda Collection)] |