Is an area in Kansas that was disputed between the Indians and the United States. It was the Southern boarder of the state. Cherokee Outlet was the Northern part of Oklahoma also involved in the dispute.
This land was in dispute since 1825 - 1866, at which time the Treaty of 1866 selling the land for not less than $1.25 an acre. In 1871 the land was surveyed and found to be off by 2.46 miles.
Here's a link to a web page with a Map of the area: http://www.usgennet.org/usa/ok/state/outlet/strip.html There are also some great books out there regarding the history of this area.