(Campsites: 5 mi. SW and 3 mi. NE of marker) The United States government had the Canadian River explored in 1845, just before Texas joined the Union. Topographical engineer James W. Abert (1820-1897), a West Point graduate, had charge of a 33-man party, and spent two or more days in the vicinity of this marker. Near here he was visited by Kiowa Indians, who said that they were at war with Texans. Abert was made welcome after he proved to be an American. His map of the river and notes on geography and the Indians proved valuable to Texas and the nation. (1974)