Upper Platte Indian Agency

History
The Upper Platte Agency was created in 1848 and originally had jurisdiction over large portions of what became the states of Colorado, Wyoming, Kansas, and Nebraska. In 1855, the Upper Arkansas Agency was created, taking responsibility for the area which is now eastern Colorado and western Kansas.

The agency headquarters moved several times, but the primary locations of the agent for the years below were:


 * 1848-1857 -- at or near Fort Laramie
 * 1857-1861 -- on Deer Creek about 110 miles west of Fort Laramie
 * 1861-1863 -- near Fort Laramie
 * 1863-1867 -- on the North Platte River about 24 miles east of Fort Laramie
 * 1867-1868 -- North Platte, Nebraska

In December, 1868 the Upper Platte Agency was moved to the mouth of Whetstone Creek on the Missouri River, 18 miles from Fort Randall in Dakota Territory. It was renamed the Whetstone Agency in June 1869.