ShowShowZig-Zag, 2nd showJun 25, 1966Avalon Ballroom · San Francisco, United StatesFollow0 followersI was thereAdd yoursMediaLineupAboutDateJun 25, 1966VenueAvalon Ballroom · San Francisco, United StatesArtistsBig Brother & the Holding Company, Quicksilver Messenger ServiceListingConfirmedShow details from MusicBrainz.