Youtube is a great source and some of my favourites among the older guys are:
- Big Bill Broonzy „Too Too Train Blues"
- Woody Guthrie~ All You Fascists Bound To Lose
- John Lee Hooker - Hobo Blues
- Mississippi John Hurt - You got to walk that lonesome valley; and of course
- Muddy Waters - Manish Boy and Hoochie Coochie