17. The Riders of High Rock Louis L'Amour 1951
The first Hopalong Cassidy novel.
Cayouses, palouses, and hombres. Camaraderie and foiled rustlers, but no girls gotten in this one.
Good read, especially for learning WesternSpeak.
I've read 80 of these so far, but I have 20 more to read in my possession, so I think it fair to assume there are more than 100 to read in all.