- History Books
- Historical Highlights
- 1881 Old Settlers Record of Dixon and Vicinity
- 1892 Portrait and Biographical Surnames
The following are important events in the history of Lee County.
- 1778 Illinois became a county of Virginia after Americans captured Kaskaskia, the British seat of government.
- Virginia relinquished its claim in 1784.
- 1787 Congress made Illinois part of the Northwest Territory.
- The Northwest Territory was divided in
- 1800, when Illinois became a part of Indiana Territory.
- 1809 The Illinois Territory was formed when the Indiana Territory was divided.
- 1818 Illinois became a state, after the Wisconsin region was transferred to the Michigan Territory.
- 1828 Joseph Ogee Starts first ferry at what is now Dixon.
- 1829 Post Office established at Ogee's Ferry.
- 1830 John Dixon leases ferry from Ogee.
- 1832-33 Black Hawk War
- 1836 Last Indians leave area
- 1836 Ogle County organized, December
- 1838-56 Improvements in transportation hastened immigration to the northern counties.
- The National Road reached Vandalia in 1838.
- The Illinois-Michigan Canal opened in 1848.
- The Illinois Central Railroad was completed in 1856.
- 1839 Lee County established, 27 Feb 1839
- 1850 Civil townships organized
- 1854 First railroad
- 1861-65 Over 2,400 Lee County men served in the Union armed forces during the Civil War.
- 1871 Fire destroyed much of Chicago.
- 1873 Truesdell Bridge collapse
- 1876 Amboy Depot Built
- 1900 The current Lee County Courthouse was built
- 1919 Dixon War Memorial Arch
- 1933 Lincoln Bridge and Lincoln Statue
- 1942 Green River Ordnance Plant
- 1966 Sauk Valley College
- 1985 The Lee County Courts Building was built
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