Original 1st printing 14&1/8 x 19&7/8" concert poster for Texas psychedelic/fuzz rock legends the 13th Floor Elevators (featuring Roky Erickson) appearing with Quicksilver Messenger Service at the Avalon Ballroom in San Francisco, CA from 9/30-10/1/1966.
Art by Stanley Mouse & Alton Kelley (photo by Ralph Morse), image ("Zebra Man") is # 28 in the Family Dog/Avalon series.
Medium-thick flat vellum stock poster is in BEAUTIFUL near mint (A-) condition; just a couple of ultra-tiny hairline bends in the margins/corners and that's IT... an absolutely INCREDIBLE-looking specimen of this perennially popular Mouse/Kelley image from the Avalon.