I consider myself to be a prolific reader (100+ books a year) and once in a while I run across something accidentally that is really terrific. The two novels in the title kept me very interested and eager to turn pages, I wish this was a trilogy, I need to know more. The first is set in the Civil War with the protagonist a scout for the Confederacy. The second is set in early Arizona immediately after the war.
Andre Norton (1912-2005) wrote the two novels but she (Born Mary Alice Norton) only dabbled in historical fiction, most of her writing efforts, and she published over 100 books, were science fiction and fantasy for young adult and children readers. And she was really good at it as evidenced by the dozens of awards she won in her more than 70 year writing career. Her novel, The Beast Master, became a classic to sci-fi readers and movie goers.
Ms. Norton, who published more than 30 books after the age of 80, also wrote under name of Andrew North and Allen Weston. Wish she would have published a few more westerns.
NOTE - I came across the first novel in a two dollar Kindle download of a 25 western megapack and found the second for free download. Both are worth the reading and each is only around 200 pages, (estimate).