Here's a great video clip of Reg Kehoe and His Marimba Queens, performing sometime in the early 1940's: big MP4 file | small MP4 file (click to download files). Here's the page on archive.org that this came from. There's more versions of it and info over there. Thanks to Carrie from Stay Free for alerting me to this little wonder.
This band apparently performed at the start and end of the vacation season in Hershey, Pennsylvania every year. The clip here came from a PBS show Matinee At The Bijou. A fuller version of this segment was made available to the public originally as a "soundie," a film reel that played inside a video jukebox of the day called a Panoram, a precursor to the Scopitone.
All in all, a real delight of a clip. Maybe I'll rip and post a batch of tracks from other marimba bands.