Johnny Marvin tune on video with good vintage pictures

My YT friend pax41 posted a great Marvin tune on Youtube. He specialized in old 78s accompanied by great old photos. Check it out and please leave a nice comment. Maybe he'll post more vintage uke songs.

Thanks!

BTW, there's a photo of Marvin in the video where he's holding a baritone uke. But his clothes suggests the photo was taken in the 1920's. Wasn't the bari uke created in the 40's? Is that a tenor guitar he's holding?