Map of the states and territories of the United States as it was from 1860 to January 1861. On February 8 1860, a dispute arose between Texas and the federal government over ownership of Greer County. On January 29 1861, the eastern portion of Kansas Territory was admitted as the state of Kansas; the western portion seems to have had no official definition for roughly a month, as it was not transferred to Colorado Territory until February 28 1861. During this period, it was de facto under the control of the self-proclaimed Territory of Jefferson.
{{Information| |Description=Map of the states and territories of the United States as it was from |Source= |Date= |Author=Made by User:Golbez. |Permission=Own work, attribution required (Multi-license with GFDL and Creative Commons CC-BY 2.5) |other_