On Friday, August 23, 1968, the fourth and final bracket of BG-133 opened at Fillmore West: Quicksilver Messenger Service - the local guitar band at the height of its powers, months from Happy Trails - over Spooky Tooth and Cold Blood, Holy See lights (per wolfgangs, which brackets the Aug 23-25 QMS nights within the single BG-133 poster; the QMS run independently corroborated on the San Francisco Sound family-tree show list). The same double-sized sheet that had carried The Who, Creedence, and the Dead now closed its two weeks with the Avalon's-and-Fillmore's shared local heroes.