Original 1st printing 14&1/8 x 20" concert poster for the Jim Kweskin Jug Band (with Maria Muldaur) appearing with Big Brother & the Holding Company (featuring Janis Joplin) and Electric Train at the Avalon Ballroom in San Francisco, CA from 10/7-8/1966.
 
 Art by Stanley Mouse and Alton Kelley, image ("Girl With Green Hair") is # 29 in the Family Dog/Avalon series. (*OP-1 in the Eric King guide)
 
 Medium-thick flat vellum stock poster has been professionally restored to excellent (B+) condition; the poster was washed to remove surface dirt, which resulted in a slight dulling of the ink in a couple of areas (and brightening of the white), along with pin/tack hole repair in all four corners and an obliterated soft stain along the lower right margin, but overall the piece looks fairly clean (if a bit bright around the edges),

VERY nice-looking restored 1st printing example of this ICONIC 1966 Avalon poster.