Official promoter-issued 2nd printing 13&3/4 x 21" concert poster for the Great Society (featuring Grace Slick) appearing with the 13th Floor Elevators and Sopwith Camel at the Fillmore Auditorium in San Francisco, CA on 8/26-27/1966. Art by (and SIGNED in pencil by) Wes Wilson (Grace Slick photo by Herb Greene), image is # 25 in the Bill Graham/Fillmore series. Medium flat vellum stock poster is in sparkling near mint (A-/B+) condition; aside from a small nick in the top left margin and maybe a stray surface ding or two, it is an ULTRA-sharp example of this iconic early Fillmore poster with a nice large Wes Wilson signature. A BEAUTIFUL specimen.