Once Upon a Horse...

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 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.

Lambert, a young man out to make his fortune, is out west trying to sell a gadget that can peel potatoes, open cans, pull out nails and perform other handy tasks. He comes to a cattle ranch and runs into a group of cowboys eating supper. He impresses the cowboys so much that they make him their leader, and it's not long before he's hired by pretty young ranch manager Vesta Philbrook as her aide and bodyguard. "The Duke", as he's now called, falls in love with her and sets out to help her get rid of a gang of vicious cattle rustlers that are constantly raiding her ranch.

During the Klondike Gold Rush, a misanthropic cattle driver and his talkative elderly partner run afoul of the law in Alaska and are forced to work for a saloon owner to take her supplies into a newly booming but lawless Canadian town.

A former gunslinger is forced to take up arms again when he and his cattle crew are threatened by a corrupt lawman.

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.

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.

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…

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.

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.

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.

Seeing cattle dying of thirst, a stranger shoots a hole in Hoades water pipeline. Hoades is hoarding water trying to drive the ranchers away. Hounded by the law for stealing a pie, the stranger sees a chance to redeem himself by forcing Hoades to sell his pipeline and leave the area.

Shadrach Jones, ex-Texas State Policeman, has the ruthless determination to find and kill the man who shot his brother in the back and stole the money with which he was to buy a ranch for the two of them. At the saloon-hotel run by Adelaide, Shadrach is convinced that one of the cowhands on the Captain McKellar cattle drive to Montana is his man. He takes the job of trail-herd boss to find the killer. McKellar preaches to Jones that he should forget revenge and let the law of retribution take care of the killer. Shadrach's hard driving of the men and his hunt for the killer makes him bitterly hated, and his retribution quest ends in a manner he did not anticipated.

Broke and in debt, an otherwise honest cowboy and his buddy get mixed up in some shady dealings with a crooked cattle dealer.

Dare Rudd takes a shine to his cattleman cousin Tom's girlfriend who asks Tom to hire Dare to head the big cattle drive. Dare loses the money for the drive to cardsharps, but Tom wins it back, but Dare must save Tom's life.

Tensions erupt within an Arizona cattle baron's household when his three sons vie for control of the ranch.

Working as an assistant on a long cattle drive, the young Ben Mockridge contends between his dream of being a cowboy and the harsh truth of the Old West.

A farm girl learns she is a princess and is swept away by a tornado to the land of Oz.

A New Mexico cattle man and his strong-willed daughter clash over land and love.