Original 1st printing 14&1/4 x 20" concert poster for the Sir Douglas Quintet appearing with Big Brother & the Holding Company (featuring Janis Joplin) and "a Special Surprize Visit"* appearing at the Avalon Ballroom in San Francisco, CA on 10/15-16/1966.

 Art by Stanley Mouse and Alton Kelley with a photo by Edward Steichen (Gloria Swanson, 1924), image is # 30 in the Family Dog/Avalon series.

 Medium flat vellum stock poster is in very good to excellent (B/B+ to B+) condition; there are tack holes in all four corners, along with a mild degree of toning, a slight curl to the paper, a few VERY thin horizontal roll bends/stress creases hiding within the image area, a touch of handling/edge wear and a soft surface stain in the top center border of the image, otherwise fine. 

 The "Surprize Visit"* alluded to above was by none other than the 13th Floor Elevators, making this FD anniversary celebration an all-Texan-fronted affair... not to mention the ad-hoc jam fronted by Jerry Garcia and Pigpen on the 16th (as mentioned in "Mojo Navigator"*). 

http://lostlivedead.blogspot.com/2009/07/october-15-1966-avalon-san-francisco-ca.html