This was first done by AP Carter.
This seems to be his family band that he started,may not be the exact original....but it's awful.
http://www.youtube.com/watch?v=KB1-1...EE4D920DCF5A26
Done many times since and this is the best...much,much bettah:
http://www.youtube.com/watch?v=9OwSag4s-QU