Jackson Purchase (U.S. historical region)
The Jackson Purchase is a region of western Tennessee and southwestern Kentucky, bounded by the Tennessee River on the east, the Ohio River on the north, and the Mississippi River on the west, that was ceded to the United States by the Chickasaw Peoples in 1818.   
The land was ceded after prolonged negotiations in which the United States was represented by Andrew Jackson and Isaac Shelby, while the Chickasaws were represented by their chiefs, head men and warriors including Levi and George Colbert, Chinubby (also known as the Boy King), and Tishomingo. On October 19, 1818, the two sides agreed to the transfer by signing a treaty (the Treaty of Tuscaloosa). The United States agreed to pay the Chickasaws $300,000, at the rate of $20,000 annually for 15 years, in return for the right to all Chickasaw land east of the Mississippi River and north of the Mississippi state line. The treaty was ratified by the United States Senate and confirmed by President James Monroe on January 7, 1819. 
In modern geographic usage, the name "Jackson Purchase" typically refers only to the portion of the historical region in the state of Kentucky. The Tennessee portion of the historical region is known as "West Tennessee."
- "Special Collections; Jackson Purchase". UTM.edu. Retrieved April 2011.
- "Kentucky State". Kentucky State Government. Retrieved April 2011.
- Blythe Semmer, Jackson Purchase in the Tennessee Encyclopedia of History and Culture
- Jackson Purchase, excerpt from The Kentucky Encyclopedia edited by John E. Kleber (1992)
- Fred S. Rolater, Treaties in the Tennessee Encyclopedia of History and Culture