Nice. There's a guy at the local jam that sings and plays that. I joined on harp :) . I wasn't sure it was an established song till now.
Let's see... Looks like a guy named Tampa Red recorded it in the early 40s. Then it looks like a whole buncha guys covered it. Who knows if he was the first to record it though.
----------
~Ryan
"I play the harmonica. The only way I can play is if I get my car going really fast, and stick it out the window." - Steven Wright
Pennsylvania - H.A.R.P. (Harmonica Association 'Round Philly)