www.wolfgangsvault.com

This is a really good site with concert footage and audio clips, plus pictures and interviews. You can even be listening to a concert and skip to a particular song.

It's mostly 70s and 80s stuff but is still worth a look.

Great find - especially for the older guys and gals who attended some of those gigs back in the day;).

Bill Graham was apparently a fanatic about recording shows he put on. The sound quality of some of the shows is really good, and some shows are available for purchase. I just downloaded a Humble Pie show from '73 that's pretty good.

I bought one of the Jeff Beck Blow By Blow shows with Bernard Purdie, Wilbur Bascomb, & Max Middleton.

...and there's some '70s Chicago worth hearing.
Hearing Alice Cooper with Elton John's Dee Murray & Davey Johnstone was pretty cool, too.

Good stuff!