Bonita, Arizona: Where Billy the Kid Killed His First Man and Wyatt Earp Hid from the Law

Bonita, Arizona is a ghost town in Graham County that served Fort Grant from 1884 to 1955. It was a supply and service community for soldiers and ranchers — saloons, a store, the kind of rough establishments that clustered outside frontier military posts. The Bonita Store, where Billy killed Cahill, still stands. Cahill is buried in the Bonita Cemetery.

01Fort Grant and the Apache Wars

Fort Grant was relocated to the southwestern slope of Mount Graham in 1872, after the Camp Grant Massacre. The Army positioned the new post to protect settlers from Apache raids that had made the Sulphur Valley dangerous for ranchers. Bonita grew up a couple of miles from the fort, catering to soldiers on leave and ranch hands working the surrounding range.

The area's "Hog Ranch" — frontier slang for an establishment offering alcohol, gambling, and companionship — was where soldiers spent their pay. The saloon where Billy killed Cahill was part of this economy.

02Billy the Kid at Bonita

Henry McCarty arrived near Fort Grant in 1876, working as a ranch hand and tending sheep. He was a teenager — orphaned, rootless, and unremarkable except for his quick temper. The killing of Cahill on August 17, 1877, was not a planned act of violence. One witness later testified: "He had no choice; he had to use his equalizer."

But the rough justice of territorial Arizona might have convicted Billy anyway — Cahill hadn't drawn a weapon, and being thrown to the ground by a bigger man didn't clearly justify lethal force. Billy didn't wait to find out. He stole a horse and rode east into New Mexico, where he would become the most famous outlaw of the Lincoln County War.

Cahill's body was buried in the Bonita Cemetery, where his grave is still documented by Find A Grave.

03The Sierra Bonita Ranch

Just north of Bonita, Henry Clay Hooker established the Sierra Bonita Ranch in 1872 — the same year Fort Grant relocated. Hooker built what became the largest ranch in Arizona Territory: 250,000 acres, up to 30,000 head of cattle. The ranch sat in the Sulphur Valley between the Galiuro and Pinaleno Mountains.

Hooker was an unusual frontier figure. He befriended Cochise, the Apache leader, before Cochise's death in 1874. He also befriended Wyatt Earp. In March 1882, during the Earp Vendetta Ride — when Earp was hunting the men who had shot his brothers — Hooker let Earp's posse rest at the Sierra Bonita ranch house and offered to speak to the territorial governor on their behalf. The ranch is documented by the National Park Service as a historic site.

04What Remains of Bonita Today

The Bonita Store — the building where Billy the Kid killed Windy Cahill — still stands, one of the most historically significant structures in Graham County. The Bonita Cemetery survives. Fort Grant itself is now the Fort Grant Unit of the Arizona State Prison Complex-Safford, a state prison for male inmates since 1973. The fort's military buildings are on prison grounds and not open to the public.

For visitors interested in Billy the Kid's Arizona period, Bonita offers something that Lincoln County, New Mexico cannot: the physical location where the Kid's career of violence began.