BOOKS - Charles Siringo; Author, Cowboy, Detective ... and don't forget the movie

From the Texas Historical Historical Association:

Siringo, Charles Angelo (1855–1928).Charles Angelo Siringo, cowboy, author, and detective, was born on February 7, 1855, in Matagorda County, Texas.   More, click this link.

But this is about 3 of his books:

First, and always where you need to start (at least in my way of thinkin'); "A Texas Cowboy or Fifteen Years on the Hurricane Deck of a Spanish Pony"

Next, "A Cowboy Detective"  Originally printed in 1912.  Our copy here is a 1988 reprint.

Last, for now, "Billy the Kid"  Originally published in 1920.  Our copy is a 2000 reprint