Hoppy's friend Dennis owns a rich gold mine. Frazier who owns the adjoining mine and wants the Dennis mine, has Dennis killed. Hoppy steps in to take over running the Dennis mine and learns Frazier's men sneak into and work the Dennis mine at night. Hoppy captures one of Frazier's men only to be captured in return by Frazier and left to die in a burning building.

Stan and Ollie try to deliver the deed to a valuable gold mine to the daughter of a dead prospector....

To restore his family's lost wealth, a young Boston lad stows away on a ship bound for the Californi...

Two jobless Americans convince a prospector to travel to the mountains of Mexico with them in search...

A trio of American adventurers marooned in rural Mexico are recruited by a beautiful woman to rescue...

A cowboy and a beautiful girl inherit a supposedly haunted gold mine.

Henry Moon is captured for a capital offense by a posse when his horse quits while trying to escape ...
Evil Red Sampson and his band of rustlers shoot up Mineral Point, the ranch of William Conway, owner...

Rex, Slim and the boys are fired by a wealthy rancher but decide to help him out when his daughter i...

On her b-day, settler's daughter Apanatschi receives her father's secret gold mine but greedy neighb...

Rod Drew hunts for a missing girl and finds himself in a fight over a goldmine as well.

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...

An evil gang is involved in both cattle rustling and the robbing of stagecoaches. Hoppy must stop th...

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

On a cattle drive Hoppy, camp cook Windy, companion Lucky, and young Artie Peters encounter an eccen...