Psychedelic image of a long-haired beauty hanging a peace ornament on a Christmas tree embodies the holiday groove of this legends-packed 1967 rock bill in San Francisco. Sublimely rendered 14- by 21-inch fluorescent first-printing posterboard has slight chipping on the borders and a few tiny creases but is ready for an encore. Check out the names listed in pink and red on Bill Graham's six-day program: The Doors, Chuck Berry, Big Brother and the Holding Co. (Janis Joplin) and Jefferson Airplane. You can still be there.