Rick Geary 
True Death of Billy the Kid [PDF ebook] 

One of the great folk legends of the Wild West, William H. Bonney went from cowboy and rancher’s gunslinger to a pure outlaw, forever dodging justice in New Mexico before it was even a state. On the one hand, he was charming, fun-loving, often present at social events, quite appealing to the ladies. Also conversant in Spanish, "Billito" was popular with the Spanish speaking crowd. On the other hand, he had no compunction to coldly kill a man, a sheriff, a deputy-anyone who got in the way of his rustling cattle or horses for an illicit living. He also proved hard to keep in jail once he was caught. It is probably his daring escapes from jails that made him most famous, and this is the main subject of this biography, which traces his story up through his death by a gunshot in the pitch darkness, fired by lawmen obsessed with getting rid of him.