Eddie Dean is a Cattlemen's Association agent investigating a serious rash of rustlings along with sidekicks Soapy (Roscoe Ates) and Waco (Lee Bennett. The latter bears a striking resemblance to Lawrence ranch foreman Bert Ford (also Bennett), who has been the target of several assassination attempts. Rancher Lawrence (Lee Roberts) and Eddie decide that Waco shall impersonate Ford, who is hiding out in a hotel room.
Range Law stars Johnny Mack Brown as "Nevada" and Raymond Hatton as "Sandy", the same characters they played in most of their mid-1940s Monogram westerns. This time, Nevada and Sandy, US marshals both, set out to collar some renegades who've been driving out the local ranchers. It's just possible that one of said ranchers is behind this land-grabbing scheme.
A drought is about to end the cattle business. The owner of a canning factory wants to buy all the remaining cattle cheap. He plans to ruin the cattlemen's plans to ship water by train and to seed the clouds for rain. Roy is sent by a packing house to investigate.
Captain Porter's scheme is to buy livestock and then have his men show up later to kill the buyer and retrieve the money. When his men kill the next victim, he frames the Arizonian for the murder. The Arizonian escapes the law and joins up with the outlaw Vasquez. Knowing Porter's scheme, he plans to trap him by using Vasquez as the next buyer.
Marshall Dan Mitchell, who is the law in Abilene, has the job of keeping peace between two groups. For a long time, the town had been divided, with the cattlemen and cowboys having one end of town to themselves, while townspeople occupied the other end. Mitchell liked it this way, it made things easier for him, and kept problems from arising between the two factions. However…
Dusty is a small burro living a quiet life with her elderly master, a farmer in Mexico, until two men sneak onto the farm and steal her. They use the animal to help them rustle cattle. Dusty carries their water and other supplies, but the men are cruel and mistreat the burro, allowing her little water and feed. Tired of this mistreatment, Dusty strains to break free of the hobbles used to control her. Starring Bill Keys as Andy, Bill Pace as a Rustler and Jim Burch as a Rustler.
When his cattlemen abandon him for the gold fields, rancher Wil Andersen is forced to take on a collection of young boys as his cowboys in order to get his herd to market in time to avoid financial disaster. The boys learn to do a man's job under Andersen's tutelage, however, neither he nor the boys know that a gang of cattle thieves is stalking them.
A town is cleared of crime when a group of cowboys under the direction of Hayden battles an outlaw gang. They also manage to restore the reputation of a friend wrongly accused of murder.
Retired wealthy sea captain Jim McKay arrives in the Old West, where he becomes embroiled in a feud between his future father-in-law, Major Terrill, and the rough and lawless Hannasseys over a valuable patch of land.
One man wants to control all the land in the state to graze all his cattle. His band of outlaws are raiding ranchers and homesteaders, trying to drive them out. Rocky and Fuzzy are brought in to help stop the raiders and keep the land for the small ranchers and homesteaders.
A former gunslinger is forced to take up arms again when he and his cattle crew are threatened by a corrupt lawman.
Following the Civil War, headstrong rancher Thomas Dunson decides to lead a perilous cattle drive from Texas to Missouri. During the exhausting journey, his persistence becomes tyrannical in the eyes of Matthew Garth, his adopted son and protégé.
Peterson has a plan to obtain all the ranches in the valley. He gives Carson a phony Spanish land grant and has him pose as the Mexican owner. When Fred and Fuzzy have their cattle stolen by Peterson's men, they quickly become involved in the scheme.
A young woman inherits her father's large Texas ranch and plans to begin a cattle drive to Abilene, Kansas, 1000 miles away. The crooked State Treasurer plans to attack the cattle drive and steal all of the stock so he can gain control of her ranch.
A noted gunman takes a job on a cattle ranch to stop a band of rustlers.
Cattle baron Matt Devereaux raids a copper smelter that is polluting his water, then divides his property among his sons. Son Joe takes responsibility for the raid and gets three years in prison. Matt dies from a stroke partly caused by his rebellious sons and when Joe gets out he plans revenge.
Broke and in debt, an otherwise honest cowboy and his buddy get mixed up in some shady dealings with a crooked cattle dealer.
A cowboy arrives to help a girl who has a note due. He plans to sell her cattle to raise the money but they are stampeded and most are killed. Knowing who stampeded them gives him another plan to get the money.
Don Diego is a large ranch owner, the uncle of Dolores and the guardian of a young American, Steve Randall. Steve has just delivered a large herd of cattle to the ranch, where Don Diego has just found out that he must pay the local tax commissioner, Harkness a fine for unpaid taxes on a herd of over one-thousand cattle. Steve offers to drive the cattle to the commissioners office, even though he fells the fine is unjust. Arriving at the office, Steve learns that Harkness (who he has never met), who has a reputation for dishonesty, is out. Dropping by the cantina, Steve gets into a fight with Harkness, and Harkness swears vengeance on Steve, especially after Steve stampedes the cattle through the town.
Cattle baron John Chisum joins forces with Billy the Kid and Pat Garrett to fight the Lincoln County Land War in the New Mexico Territory of 1878.