A fairly accurate and detailed history of the Comanche and Rangers at this time. I live on what was then the edge of civilization where Texians barely held on and the Comanche ruled to the West. Uvalde Canyon is maybe an hour and a shelf away.
For an even more detailed and well-written history of the Comanche and the Rangers and the times, read S. C. Gwynne's Empire of the Summer Moon: Quanah Parker and the Rise and Fall of the Comanches, the Most Powerful Indian Tribe in American History.