Savage Sam is a 1962 children's novel written by Fred Gipson, his second book concerning the Coates family of frontier Texas in the late 1860s.
It was inspired by the story of former Apache captive Herman Lehmann, whom Gipson had seen give an exhibition when he was a child.
Jim Coates, the boys' father, gathers up some neighboring men to go in search of them, which includes Lisbeth's somewhat overbearing grandfather, Bud Searcy.
Travis manages to escape and is found by the search party (partly thanks to Sam's keen sense of smell), and they rescue Arliss and Lisbeth days later.
A follow-up novella, Little Arliss, was discovered in Fred Gipson's papers by his son, and published in 1978.