In the world of Robert “Rabbit” Gould, a cow was money on the hoof, and a brand was the only thing standing between a rancher and ruin. That made the man with a running iron the most quietly dangerous figure on the Colorado range. This entry in The Real West looks at cattle rustling as it actually happened in the 1870s and 1880s: how thieves worked, how cattlemen fought back, and how justice on the open range rarely looked the way the movies tell it.
A brand was a signature written in fire
A hot iron left a permanent, hairless scar, and that scar was legal proof of ownership. It was, in effect, a signature you could read from horseback. So the whole craft of rustling came down to one problem: how do you rewrite another man’s signature?
The classic tool was the running iron, a straight rod with a curved tip that a skilled hand could use to freehand new lines onto an existing brand, turning one outfit’s mark into another. When simply owning a running iron became incriminating, thieves switched to a length of heavy wire that could be bent into any shape and carried in a pocket. The boldest reworked brands in plain sight; a Texas Panhandle example saw the famous XIT turned into a “Star Cross.” Some skipped the iron entirely and counterfeited a brand by picking out the hair with a knife, or burned a fresh mark and altered the animal’s earmarks to match. In much of cattle country, being caught in possession of a running iron was, by itself, treated as enough to justify an “open-range execution.”
The maverick: the easiest theft in the West
The simplest way to steal a cow was to find one nobody had branded yet. An unbranded animal on the open range, usually a motherless calf, was called a maverick, and the word carries a real story. Samuel Maverick, a San Antonio lawyer, took some four hundred longhorns in payment of a debt in 1847 and neglected to brand the calves that followed. Neighbors took to calling any unbranded animal “one of Maverick’s,” and the name stuck to the whole category.
Mavericking sat in a moral gray zone for decades. A calf with no brand and no mother nearby could be honestly claimed or quietly stolen, and the line between the two was exactly where range wars were born. The methods thieves used to keep a stolen calf from bawling its way back to a branded mother were ugly, and they tell you how high the stakes ran: hobbling, blinding, or in the coldest cases simply shooting the cow. What finally strangled the trade was not a lawman at all. It was barbed wire. Fenced range took away the rustler’s mobility in the 1880s more effectively than any posse ever did.
Colorado organized against theft before it was even a state
Rabbit Gould’s Colorado was not lawless by accident of neglect; it was a place where cattlemen built their own institutions early. The territory established brand-inspection agencies in 1865, eleven years before statehood, and the brand statutes written that year still underlie Colorado livestock law today. In 1867, about thirty ranchers met in Denver and formed what became the Colorado Cattlemen’s Association, explicitly to combat rampant cattle theft. It is the oldest organization of its kind in the country, and it was born fighting rustlers. Colorado passed its own anti-mavericking law in 1879.
To the north, Wyoming’s cattlemen built something even more powerful. The Wyoming Stock Growers Association, organized in the early 1870s, ran the official roundups, employed brand inspectors, and by the late 1870s was paying detectives out of members’ dues to hunt thieves. Its 1885 brand book listed more than a thousand registered brands across some three hundred and seventy-five outfits. Reading those brands was a genuine profession: the best cowboys carried hundreds of marks and their grammar, the “lazy” letters and “hanging” symbols, in their heads, and hired on as “reps” who rode between camps claiming their outfit’s cattle.

The range detective
When juries failed them, the big cattle interests hired men to work outside the courtroom. The most infamous was Tom Horn, a former Pinkerton who signed on as a “stock detective” for cattle barons across southeastern Wyoming and northwestern Colorado in the 1890s. His name is tied to the 1900 killings of Matt Rash and Isom Dart in Brown’s Park, on the Colorado side of the line, and he was hanged in Cheyenne in November 1903 for the ambush of a fourteen-year-old boy, a murder the leading modern account argues he probably did not commit. The lurid figures often attached to Horn, a tally of seventeen killings, a fee of six hundred dollars a head, belong to legend more than to the record; take them as the campfire version.
Not every detective was a hired gun. Colorado’s own Cyrus “Doc” Shores of Gunnison worked as a stock detective and county sheriff and is remembered as a lawman who did the job honestly, the counterweight to the Tom Horn story. Both men were real, and a good saga lives in the space between them.
Justice that rarely reached a courtroom
Here is where the myth and the record part ways most sharply. The image of a judge sentencing a rustler to hang is very nearly fiction. Historians struggle to name a single instance of a horse or cattle thief lawfully hanged by a court; the hangings that happened on the range were vigilante killings, not verdicts. Where the law did work, the penalties were prison, not the rope. An 1890 Wyoming statute, for example, set three to ten years for altering a brand with intent to steal.
The reason cattlemen turned to the rope was that juries would not convict. In one 1889 stretch, Johnson County, Wyoming juries acquitted the suspects in five straight cattle-theft cases, and modern review of those files shows many prosecutions were thin, driven more by reward money than by evidence. The frustration curdled into organized violence. In Montana in 1884, a campaign of vigilantes associated with the rancher Granville Stuart killed somewhere between roughly twenty and thirty-five accused horse thieves, with period newspapers claiming far higher numbers.
When “rustler” became a weapon: the Johnson County War
The extreme case, and the one that shows how the word “rustler” could be turned into a weapon, was Wyoming’s Johnson County War. In July 1889 a group of cattlemen lynched the homesteaders Ella Watson and Jim Averell on the Sweetwater; the newspaper story that painted Watson as a rustler was, by recent authoritative research, invented out of whole cloth. No one was convicted. Then in April 1892, some fifty-two armed men, powerful cattlemen and their foremen alongside two dozen hired Texas gunmen, rode a secret train north out of Cheyenne carrying a death list of seventy names. At the KC Ranch, one man, Nate Champion, held off roughly fifty attackers for hours before they burned him out. The invaders were then besieged in turn by a citizens’ posse that swelled past four hundred, until the U.S. Cavalry took them into custody. In the end no one was ever tried; no jury could be seated and the county could not fund the case. The backlash swept the next election.
That is the lesson worth carrying back into the fiction: on the open range, “rustler” was not always a fact. Sometimes it was an accusation the powerful made about the people in their way.
The country Rabbit rode
The Colorado of the saga was cattle country at its height and on the edge of its collapse. The Goodnight-Loving Trail brought Texas herds up through the Arkansas Valley near Pueblo and on toward the South Platte; John Wesley Iliff built a cattle empire across the state’s northeast that ran some thirty-five thousand head by his death in 1878. Denver’s Union Stock Yards opened in the early 1880s and became the great market where plains cattle, and the occasional laundered herd, changed hands. Then came the killing winter of 1886 and 1887, the “Great Die-Up,” which wiped out a devastating share of the Front Range herds and collapsed the number of large Colorado cattle companies from dozens down to a handful. Hard winters and busted markets put desperate, out-of-work cowboys onto the range, and that desperation is the soil rustling grows in.
It is exactly the world Robert Gould has to survive: a place where a brand is law, a running iron is a loaded gun, and the difference between a rustler and an honest man can come down to who is holding the pen that writes the story.
The Rabbit Gould saga follows one man through this vanishing West. Browse the full series to start reading, and watch this space for more entries in The Real West.