Marshal Landry captures outlaw Girard and bringing him in finds a woman and two children, the only survivors of an Indian attack. Later, transferring the prisoner his brothers free him. Then a stage is robbed of a silver shipment by Girard and his brothers. Examining telegrams gets Landry a confession from Girard's girlfriend. The telegraph line has been tapped and the telegrapher is the supposedly dead husband of the woman he brough in. Now knowing Girard's location he sets out after him.

The tale of Clint Farrell, an aspiring lawyer who must use both his wits and his brawn to save his town from being taken over by a villainous railroad financier.

Before he was killed by Mark Foster's men, Bud Lawton willed part ownership in his ranch to Hoppy and his two pals. When the three arrive they find a fake posing as Lawton. When they expose the imposter, Foster gets the Sheriff to jail them for Lawton's murder.

Stagecoach robbers take the money Hoppy was going to use to buy cattle so Hoppy, California and Lin go after them.

Hoppy, California and Johnny partner up with brother and sister ranch owners, two of several who are having their access to water blocked by a dam owned by a greedy merchant in town, who is intent on driving them out and taking their land for himself.

In this western, two cowboys ride to the rescue of ranchers who are fighting to keep a land-grabber from taking their land and selling it to the railroad

Johnny Mack Brown's Universal western series was drawing to a close when Cheyenne Roundup was released in mid-1943. Brown is herein cast in a dual role, as honest Gils Brandon and his less-than-honest brother Buck. Pursued by lawman Steve Rawlins (Tex Ritter), Buck tries to pass himself off as the upright Gils.

A posse discovers a trio of men they suspect of murder and cow theft and are split between handing them over to the law or lynching them on the spot.

In order to obtain a stage coach mail contract, a new road must be built. A gang of outlaws try to prevent the building of the road.

Hoping to increase its box-office allure by adopting the title of a popular song, Deep in the Heart of Texas (clap!clap!clap!clap!) was the first Johnny Mack Brown western of the 1942-43 season. The plot concerns a group of insurrectionists who intend to keep Texas separate from the rest of the USA.

A cowboy heads for the town where his father was murdered to find out who was responsible.

Crenshaw and Randolph are competing freight haulers and Randolph's lead man Tom Baxter has given him an advantage....

When Edward Creighton leads the construction of the Western Union to unite East with West, he hires a Western reformed outlaw and a tenderfoot Eastern surveyor.

Bill Ralston arrives in town planning to settle down but quickly gets caught up in the fight between the townspeople and Poe Daggett and his gang. He takes the job of town Marshal and soon brings law and order. When Daggetts men ambush him he kills Poe's brother. Poe then kills Bill's friend Brant and this leads to the showdown.

The Canadians have discovered a valuable substance called Compound X, which can cure infantile paralysis. When a country at war with Canada learns that Compound X also contains magnetic properties that could aid them in their warfare against the British, they send agents to infiltrate Canada and steal a large quantity of the substance. It's up to Sgt. King (Allan Lane) and his Mounties to track down the agents and put an end to their scheme.

Beyond Hell's Gate Pass is territory controlled by a man who calls himself King Carter; he uses a variety of schemes to prevent the railroad from being built, for fear it will finish his control of (what he considers) his land.

A cowboy arrives in a town, and is immediately mistaken for his twin brother who is wanted for murder.

The mysterious Don Del Oro ("Lord of Gold"), an idol of the Yaqui Indians, plans to take over the gold and become Emperor. Francisco was put in charge of a legion to combat the Yaqui tribe and protect the land, but when attacked Zorro came to his rescue. Francisco's partner recognized Zorro as the hidalgo Don Diego Vega, then ask him to take over the fighting legion as his alter-ego Zorro.

Hoppy and Lucky are headed to South America to deliver a heard of cattle. Bay guy Ralph Merritt gets in their way. For a while.

The Three Mesquiteers convince a group of settlers to exchange their present property for some which, unbeknownst to our goodguys, is going to be worthless. They are captured before they can warn the ranchers.

Jeff Scott is sent to investigate problems with wagon trains attempting to make the journey to Oregon. Sam Morgan has sent his henchmen, under lead-henchman Bull Bragg, to stop the wagon trains in order to maintain control of the fur trade in the area.

Escaped Prisoner 39013 impersonates the rich and influential Horace Granville, allowing him to create a variety of disasters. Fortunately, he is thwarted repeatedly by three daring circus daredevils.

In the midst of the Civil War, Lassiter has a plan to get control of California. Working out of St. Joseph, he plans to send forged messages to the troops on the west coast via Pony Express. First he attempts to bribe Pony Express ride Roy Rogers. When Roy refuses he turns to the outlaw Johnson and his gang and this leads to trouble.

Roy Rogers is a cowboy who joins the Border Patrol, only to have his buddy Tommy get killed at a local saloon. Determined to get revenge at any cost, Roy and Rusty cross the border in search of Arizona Jack, the man responsible for Tommy's death.

A parodic remake of the story of the young Gascon D'Artagnan, who arrives in Paris, his heart set on joining the king's Musketeers. He is taken under the wings of three of the most respected and feared Musketeers, Porthos, Aramis, and Athos. Together they fight to save France and the honor of a lady from the machinations of the powerful Cardinal Richelieu.

Molly Taylor owns the town of Stillwell but is unaware the taxes are due as Gomer has stolen her notice. Bob Martin arrives at the same time as Molly and eventually realizes Gomer is up to something. When Gomer's henchman slips and reveals there is a letter, Bob finds it and heads for the tax collector with Gomer's men in pursuit.

Hopalong Cassidy, boss of the Bar 20 ranch in Texas, rides down the Camino Real in the New Mexico cattle country near Alamogordo, in response to an urgent message from his lifelong sweetheart, Nora Blake, who is in serious trouble. Before he and his saddlemates, "Lucky" Jenkins and "Pappy", can reach her ranch, they are stopped by Clay Allison, a cattle-rustler who is in almost complete control of the district, and wants to extend his holdings by seizing Nora's cattle and driving her out. Seeing Cassidy as a menace to his plans, he has him arrested on a trumped-up charge. Cassidy and his pals shoot their way out of the trouble and reach Nora;s ranch where they learn that Allison's henchmen have murdered her foreman, Tom Dillon, and Allison has sent for a crew of outlaws on the Texas border.

While filming a western on location, the stand-in/stunt double for an egotistical cowboy movie star proves his heroics when a "fake" bank robbery turns out to be the real thing.

Hoppy's brother has been murdered and he is on the trail of the murderers. To get them he makes himself seem to be a wanted man.

Unable to legally capture and sell a herd of protected wild horses, corrupt rancher Rance Macgowan uses his trained killer horse, Volcano, to substitute for the real leader of the herd and cause havoc and death among the ranches. With the government about to drop the restrictions on rounding up the herd, the Three Mesquiteers find themselves in the middle of the controversy after their friend, Sheriff Miller is killed by Volcano.

Sayres and his outlaw gang operate out of a town just across the border and out of the jurisdiction of the Texas Rangers. Ranger Bob Allen is sent across the border where he poses as an outlaw hoping to lure the gang back into Texas. He gets into Sayres' gang displacing the gang boss but the disgruntled ex-boss is able to expose the hoax and Bob is made a prisoner.

A crusading newspaper editor recruits his old friend Hoppy to take the job of Marshall in a town rife with vice and murder directed at helpless miners.

A cowboy turns auto racer, beats his rival and wins a girl.

Clay gets a musical troop out af jail and helps raise money so they can put on their show. During the performance Blake and his men rob the box office. The townsmen give chase and Clay goes after Blake.

Molly O'Day and her brother, Josh, are homesteading on and trying to make a living on a piece of government land, but local rancher Dave Crenshaw claims the land is part of his holdings, and he and his henchmen try to drive the O'Days off. Cowhand Jerry Wilson and his dog, Dynamite, come to their aid against Crenshaw.