Original 1st printing 14&1/8 x 20" concert poster for Chicago blues legend Howlin' Wolf appearing with Big Brother & the Holding Company (featuring Janis Joplin) at the Avalon Ballroom in San Francisco, CA from 9/23-24/1966 (*show was canceled). 
 
 Art by Stanley Mouse* and Alton Kelley, image is # 27 in the Family Dog/Avalon series. (*SIGNED in pencil by Mouse)
 
 Medium-thick flat vellum stock poster is in excellent (B+) condition; just a small 1" diagonal bend in the upper right corner, a couple of tiny thin vertical creases along the left margin, a touch of edge toning and a few soft handling bends hiding within the image area, otherwise fine.
 
 GREAT-looking original example of this classic 1966 Family Dog image with a creatively-placed Mouse signature.