Thanks bluesboy!
I was in high school and college in the San Francisco Bay Area during the late 60s and early 70s,
and went to many shows at those venues [Avalon Ballroom, (original) Fillmore Auditorium, Fillmore West, Winterland ].
The early Quicksilver (Messenger Service) is one of my all-time favorites.
I've never seen Bo Diddley live, though, unfortunately.