From IMDB:When the ancient continent of Mu sank beneath the ocean, some of its inhabitant survived in caverns beneath the sea. Cowboy singer Gene Autry stumbles upon the civilization, now buried beneath his own Radio Ranch. The Muranians have developed technology and weaponry such as television and ray guns. Their rich supply of radium draws unscrupulous speculators from the surface.

From IMDB:When the ancient continent of Mu sank beneath the ocean, some of its inhabitant survived in caverns beneath the sea. Cowboy singer Gene Autry stumbles upon the civilization, now buried beneath his own Radio Ranch. The Muranians have developed technology and weaponry such as television and ray guns. Their rich supply of radium draws unscrupulous speculators from the surface.

A filmization of an segment of the life of the legendary frontiersman, Daniel Boone. Specifically it presents an account of his first settlement in Kentucky. Starring George O'Brien. Footage from this film was used in AMERICAN PIONEER, an educational film found on Archive.org in the Prelinger Collection

From IMDB:When the ancient continent of Mu sank beneath the ocean, some of its inhabitant survived in caverns beneath the sea. Cowboy singer Gene Autry stumbles upon the civilization, now buried beneath his own Radio Ranch. The Muranians have developed technology and weaponry such as television and ray guns. Their rich supply of radium draws unscrupulous speculators from the surface.

Taken from wikipedia.org J. A. Marsden aims to take over the California-Yucatan Railroad with the aid of his henchman El Lobo. The rightful owners, Joyce and Phillip Andrews, naturally object. Their parter, Don Manuel Vega summons his nephew, James Vega, to help them as he is the great grandson of the original Zorro, Don Diego de la Vega. He is disappointed, however, to find that his nephew is a foppish dandy.

Episode "Cavalry's Coming" of the western-sitcom "Dusty's Trail", which was created by the same person as "Gilligan's Island" and "The Brady Bunch". ************************************ Info from Wikipedia: Dusty's Trail was a 1973-1974 syndicated television series set in the 1800s about a small group of travelers separated from their wagon train who become lost. Dusty's Trail stars Bob Denver as Dusty, the assistant to the leader of a wagon train, and Forrest Tucker as Mr. Callahan, his irascible boss. Twenty-six episodes of the series were produced.

Western star Hoot Gibson could always be counted on to do something different in his B-westerns of the early 30's, especially when he could inject some comedy. In this clip, a stock chase quickly takes on a twist that sends it entirely different direction, so to speak. NOTE: I cheated. The original film had no accompanying chase music so I added some from a package that was available to the filmmakers in 1932 when this picture was produced. In fact, it is probably the most famous western chase music of all time.

From IMDB:When the ancient continent of Mu sank beneath the ocean, some of its inhabitant survived in caverns beneath the sea. Cowboy singer Gene Autry stumbles upon the civilization, now buried beneath his own Radio Ranch. The Muranians have developed technology and weaponry such as television and ray guns. Their rich supply of radium draws unscrupulous speculators from the surface.

These are chapters 1-6 of an early twelve-chapter western serial released by Universal Pictures. It stars Tom Tyler in the title role , as well as Rex Bell, Francis Ford, Lucille Brown, William Desmond, George Regas, Yakima Canutt, Bud Osborne, Joe Bonomo, Jim Thorpe, Bobby Nelson and Chief Thunderbird. It was produced by Henry MacRae and directed by Ray Taylor

Taken from IMDB: Flagg is relocating flood victims to Gunsmoke Ranch. The Three Mesquiteers know Flagg to be a crook and try to warn them. They ignore the warning and improve the land only to find that it has been condemned for a new dam.