I'm not sure of the exact date it was established, but by 1868, the Chickasaw Manual Training School for Boys at Tishomingo was administered by Joshua and Lucretia Harley

After the Battle of Village Creek, the Republic of Texas signed the Fort Bird Treaty of 1842.

A Peace Treaty that wasn't supposed to be peaceful was signed by the tribes southern Indian Territory at Camp Napoleon in May 1865.

Discovery of an ancient village at Fish Creek, formerly a channel of the Red River in Cooke County, Texas, explains Cross Timbers people.

According to Jacques Marquette in 1673, this is the "First Map of the Mississippi River."

A Hamlet-Style Transaction between Tishomingo of the Chickasaws and the Choctaws, as related by a French writer in 1749.

This French map from 1783 combines European claims and native America.

The "Old Southwest," which is dominated by the Red River, is a political rather than a cultural designation.

This photograph depicts "part of Satanta's Kiowa Band at Sutler's Store, Fort Sill, Indian Territory" by either Soule or Bliss.

The Caddo structures were so numerous that Europeans who came to the Red River labeled southwestern Arkansas "Mound City."

Evidence of the Caddo City of the Dead along Ozan Creek at Washington, Hempstead County, Arkansas has been almost entirely eliminated.

Muriel Wright and Chester Howe explained different versions of how the state of Oklahoma achieved its name.

From 1893 to 1920, Rainy Mountain Indian School "Americanized" children from the Kiowa and Apache tribes, and now lies as an unmarked ruin.

The only available photographic documentation of an execution carried out by the Choctaw Nation's Lighthorsemen.

The Pawnee/ Wichita village that George Catlin sketched was abandoned by the 1860s.

The U.S. Army was instrumental in the slaughter of bison to destroy the Plains tribes.

The life of Polly Ann Colbert, a Chickasaw Free Woman, is a history lesson of Indian Territory.

The re-taking of forts in Indian Territory was one minor focus of Grant's Vicksburg campaign in the Civil War.

The bones of the Natchez warriorss could be seen there years afterwards at Lake Sang pour Sang — "Blood for Blood."

Fort Sill represents the Old West and flourishes as the last remaining, active military post that was built during the Indian wars.