The fellow on the left,named "Curly",looks to be playing a baritone sized uke. I've tried researching online to find out more about Curley, but no luck thus far. Uncle Jack,I discovered,was a very well known radio performer on WEEU with his wife Mary Lou on radio shows which led to going on tour.
But back to the pretty much unknown uke player,Curly. I haven't found out anything about him. If anyone knows anything about this fellow,I'd really appreciate you dropping me a line!