Original 1st printing 14 x 20" concert poster for Quicksilver Messenger Service with Big Brother & the Holding Company (with Janis Joplin) and the Jaywalkers on 7/1/1966, the Great! Society (with Grace Slick), Sopwith Camel and the Charlatans on 7/2/1966 and the Grateful Dead with Love (featuring Arthur Lee) and Group B on 7/3/1966, all shows held at the Fillmore Auditorium in San Francisco, CA. Art by (and SIGNED in pencil by) Wes Wilson, image is # 14 in the Bill Graham/Fillmore series. Medium-thick flat vellum stock poster is in excellent (B+) condition; a couple of tiny soft stains in the upper left margin, a set of almost-invisible staple holes in the four corners, top center and in the "ri" of "Auditorium", otherwise it's a very crisp/bright example of this early 1966 Fillmore poster, one of only a few that were not reprinted. If you're looking to complete a Fillmore set, this is a key piece.