On sale at Amazon.ca today for $CDN 2.99
Empire of the Summer Moon: Quanah Parker and the Rise and Fall of the Comanches by S.C.Gwynne
https://www.amazon.ca/Empire-Summer-.../dp/B003KN3MDG
This was a Pulitzer finalist in 2011. I haven't read it (yet); I read his excellent biography of Stonewall Jackson , so I expect this book to be high quality.