On a cattle drive Hoppy, camp cook Windy, companion Lucky, and young Artie Peters encounter an eccentric professor. The professor professes to be searching for the evolutionary missing link, but in reality he is a cattle rustler who uses his dynamite to scatter the cattle in order capture some of them. Hoppy and Bar 20 guys ultimately capture the professor.

During the Klondike Gold Rush, a misanthropic cattle driver and his talkative elderly partner run af...

Marshall Jed Cooper survives a hanging, vowing revenge on the lynch mob that left him dangling. To c...

Following the Civil War, headstrong rancher Thomas Dunson decides to lead a perilous cattle drive fr...

Remake of the 1948 John Wayne feature about a man who rebels against his tyrannical guardian during ...

When his cattlemen abandon him for the gold fields, rancher Wil Andersen is forced to take on a coll...

Honest John is pulling off a swindle by buying cattle in Texas with worthless scrip and selling them...

Three New York businessmen decide to take a "Wild West" vacation that turns out not to be the relaxi...

A cowboy sets out to help a pretty young girl who is about to lose her ranch when crooks plan to for...

Hoppy's friend Dennis owns a rich gold mine. Frazier who owns the adjoining mine and wants the Denni...

The local school is causing Hoppy problems. First Bar 20 cattle are stolen when Hoppy investigates a...

Escaped criminal "The Fox" hates Hoppy and a Rurales colonel for imprisoning him and lures Cassidy t...

Caldwell and Nixon have their men rob the stage and then critcize the Sheriff for not catching the r...

Hoppy and Lucky are headed to South America to deliver a heard of cattle. Bay guy Ralph Merritt gets...

Buck Colins heads a group of local ranchers who are trying to prevent the railroad from completing i...

Hoppy goes to town to help Marshal Windy with some rustlers and winds up helping the widow Joyce whe...

Hoppy goes undercover as a gambler from the East when Bar 20 cattle are stolen by unknown rustlers. ...

U.S. Marshal Hopalong Cassidy is called when a town becomes overun with bad guys. Disguised as a mem...

A crusading newspaper editor recruits his old friend Hoppy to take the job of Marshall in a town rif...

Hoppy's brother has been murdered and he is on the trail of the murderers. To get them he makes hims...

Problems come in the form of one of Hopalong Cassidy's neighbors, but the matter is settled when Hop...