Here’s a useful review of the subject — covering the historical figures, their relationship, key sources, and notable adaptations. This will help you distinguish fact from legend. Quick Verdict If you want one balanced, well-researched book : Billy the Kid: A Short and Violent Life by Robert M. Utley. If you want the definitive film adaptation : Pat Garrett & Billy the Kid (1973, director’s cut) by Sam Peckinpah. Historical Overview | | Pat Garrett | Billy the Kid (Henry McCarty) | |---|---|---| | Role | Sheriff, later customs agent | Outlaw, cattle rustler, murderer | | Born | 1850, Alabama | 1859, NYC (likely) | | Died | 1908, shot in ambush | 1881, shot by Garrett | | Key fact | Killed Billy, then wrote a sensationalized book | Killed 4–9 men (disputed), escaped jail |

: Garrett tracked Billy for months after Billy escaped from the Lincoln County jail (killing two guards). On July 14, 1881, Garrett shot Billy in Pete Maxwell’s dark bedroom in Fort Sumner, NM. Reliability of Sources | Source | Pros | Cons | |--------|------|------| | Garrett’s The Authentic Life of Billy the Kid (1882) | First-hand account | Self-serving, exaggerates Billy’s crimes | | Trial & court records | Verifiable facts | Limited scope | | Newspapers (1880–81) | Contemporary | Often sensational, partisan | | Utley’s biography (1989) | Scholarly, footnoted | Dense for casual readers |