Here is the first episode of a serial intended for theatres in Canada..."King of the Mounties"...
Shot just east of Los Angeles.
Except for a few seconds near the end, the original dialog tracks have been lost...So they restored it as a silent picture with newly recorded music from the original Republic sheet music library and sound effects.
Ironically, (because you can't hear him) the guy playing the lead did the voice of "Mr Ed."
Edit: I think the title sequences were wardrobe tests, and the thing on the table that "Professor Brent" is handling is a soundboard.