A former sheriff relentlessly pursuing the 7 men who murdered his wife in Arizona crosses paths with a couple heading to California.

As was customary in his late Monogram westerns, Johnny Mack Brown plays an undercover agent in Colorado Ambush. Brown is sent to Colorado to stem the activities of a particularly vicious outlaw gang

Wells Fargo agents Jack Douglas (Kirby Grant) and Bosco O'Toole (Fuzzy Knight) are sent after a gang of stage robbers. Danny Burton (Bernard Thomas, brother of Laura Burton (Jane Adams, is implicated before Jack is able to prove that saloon owner Lee Fain (Danny Morton) is the man behind the outlaw gang.

An obscure entry in the musical Western cycle, Swing, Cowboy, Swing was produced by and starred country & western bandleader Cal Shrum. Shrum and his band, the Rhythm Rangers, are warned away from playing a theater in Big Bend by Cal's brother, Walt Shrum and his Colorado Hillbillies. Ignoring the warning, the Rhythm Rangers arrive at the theater only to be shot at by a masked stranger. With the help of stranded vaudeville performer Max "Alibi" Terhune and his dummy Elmer, Cal manages to catch the mystery shooter who turns out to be Frank Lawson (Frank Ellis). The film apparently did not generate enough interest for a series, but was re-released by Astor Pictures in 1949 under the title Bad Man From Big Bend.

When Ranger Raymond is killed during a stage holdup, Wells Fargo Agent Whip Wilson assumes his identity.

A former outlaw becomes a Wells Fargo guard, but when the stagecoach is robbed, he becomes a wanted man once again.

Honest Plush Brannon is a con-man thrown out of the Barbary Coast in San Francisco in the 1880s and headed for the gold rush region of Nevada. He discovers a real mine which lead to several complications.

In one of his better Monogram Westerns, Johnny Mack Brown goes up against a crooked saloon owner with more than one murder on his conscience. Steve Corbin (Tristram Coffin) and his gang of cutthroats are terrorizing the townspeople of Rimrock, who in self-defense hire Johnny Macklin (Mack Brown) as new town marshal.

Having served a prison sentence for robbery, Pete Carver decides to go back for the hidden loot. But someone is on his trail.

Wells Fargo hires bounty hunters to protect its gold transports from the notorious outlaw Glenn Kovacs. Jeff Sullivan, one of the hired gunmen, buys the freedom of Dan Barker, a prisoner who may lead him to Kovacs. When Barker escapes from Sullivan, the other bounty hunters pursue him also, leading to the ultimate showdown between all parties.

Cheerful outlaw Charlie Boles leaves former partners Lance and Jersey and heads for California, where the Gold Rush is beginning. Soon, a lone gunman in black is robbing Wells Fargo gold shipments. One fateful day, the stage he robs carries old friends Lance and Jersey...and notorious dancer Lola Montez, coming to perform in Sacramento. Black Bart and Lance become rivals for both Lola's favors and Wells Fargo's gold.

A United States marshal uncovers a plot to steal the valuable gold-laden property of ranchers.