Original 1st printing 14&1/8 x 19&7/8" concert poster for Texas garage-rock legends the Sir Douglas Quintet appearing with Everpresent Fullness at the Avalon Ballroom in San Francisco, CA from 7/8-10/1966.
 
 Art by Stanley Mouse and Alton Kelley, image ("Keep California Green") is # 16 in the Family Dog/Avalon series. (OHB-A in the Eric King guide)
 
 Medium flat vellum stock poster is in excellent (B+) condition; there are a couple of small pin-prick age spots scattered around the outer margin area (mostly in the lower left margin/corner), along with a tiny pressure crease/edge ding in the bottom margin below "Ticket Outlets"), a couple of VERY thin diagonal bends along the upper left margin and a couple of tiny pin-prick spots on the reverse side, otherwise it is a SUPERB-looking specimen of this early Mouse/Kelley Avalon Ballroom poster.