Original 1st printing 14&1/8 x 20" concert poster for Texas psychedelic/fuzz rock legends the 13th Floor Elevators (with Roky Erickson) appearing with Quicksilver Messenger Service at the Avalon Ballroom in San Francisco, CA on 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 used (B-) condition; toning, a fairly heavy amount of corner wear (pulls, a couple of areas of missing paper in the top/bottom left corner tips, a 3/4" round hole in the bottom right corner, a series of scattered soft stains, a light amount of edge wear, a few stray tack/pin holes, a soft wave to the paper and a few bits of clear tape on the reverse, otherwise fine.
A charming-looking (if a bit used) example of one of the most popular Avalon images in the series.