- July–August 1541
- Coronado explores Kansas
- April 30, 1803
- Louisiana Purchase Treaty signed
- May 30, 1854
- Kansas Territory organized
- July 29, 1859
- Constitution adopted by convention
- January 29, 1861
- Kansas becomes 34th state
- August 21, 1863
- Quantrill's Raid on Lawrence
- Spring 1879
- Exodusters
- February 19, 1881
- First state to Constitutionally prohibit alcohol
- 1890s
- Populist Revolt
- July 1951
- Great Flood of 1951
- May 17, 1954
- Brown v. Board of Education of Topeka
