Quote Originally Posted by tentoze
Too many to remember them all without really thinking hard, several of the more notable ones:

Hendrix, Joplin, Canned Heat (harmonica dude, Owl?), Lynyrd Skynyrd, original Allman Bros Band, Spirit, Dead, Steve Goodman, Quicksilver, John Lee Hooker.
You're thinking of Blind Al Wilson, so named for the big round specks he wore.

I saw Spirit also, but California wasn't with them at the time.