On the subject of Wolf, I can strongly recommend great book called Moanin' At Midnight, the life and times of Howlin' Wolf by James Segrest and Mark Hoffman published by Pantheon published last year. It is one of the very best blues biographies available and written by guys who have really done their homework. Reading this book took me back to some wonderful nights at the 100 club and the Marquee Club.
If you want to see the man in action there is also an excellent DVD available which includes some great footage from the Chicago club scene.
The man was a giant both physically and musically.

Hoot