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.

Amusing 1937 musical short film produced by the weirdly-named "Educational Films Corporation of America". Please forgive the inane logo the DVD publisher put in the corner during the opening & closing credits.

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.

When a poor girl falls in love with an army officer her mother pretends to be the owner of the hotel where she works as a chambermaid. Boasting an "all colored cast," this is one of the few documents of America's African-American talent in a time when the big budgets were reserved for white stars.

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.

Mel-O-Toons sometimes erroneously called "Mello Toons", was a series of animated cartoons produced in 1960 by New World Productions and syndicated by United Artists. It featured various folk tales, Greco-Roman myths, Biblical stories, some original stories by author Thornton Burgess, classic stories, even adaptations of classical music and ballet. The soundtracks were often taken from existing children's records, licensed from the original labels. 104 cartoons, each about 6 minutes long, were produced in limited animation.

Gorgeous Fleischer Studios adaptation of the classic fairy tale, featuring Betty Boop's only appearance in full color. Surprise - she's a redhead!

Duke Davis (Ralph Cooper) has invested all his savings to back his sweetheart, Ethel (Lena Horne), in a road show over the old T.O.B.A. circuit, on which they have both been performers since childhood. Marshall (Monte Hawley), a New York talent scout, makes an offer to Ethel as a single and, to induce her to take it, Duke writes a fake check, made out to him, for $5000 pretending he has sold his contract with Ethel to Marshall. Resentful and heartbroken, she accepts and becomes a big hit in New York.

Taken from IMDB: In WW I dancer Jerry Jones stages an all-soldier show on Broadway, called Yip Yip Yaphank. Wounded in the War, he becomes a producer. In WW II his son Johnny Jones, who was before his fathers assistant, gets the order to stage a knew all-soldier show, called THIS IS THE ARMY. But in his pesonal life he has problems, because he refuses to marry his fiancée until the war is over.