Original 1st printing 12&5/8 x 18&1/2" concert poster for Quicksilver Messenger Service appearing with the Grass Roots and the Family Tree at the Fillmore Auditorium in San Francisco, CA on 4/22-23/1966. Art by Bonnie MacLean, image has been designated # "0" in the Bill Graham/Fillmore series (not officially a numbered piece, this one falls between BG 3 and BG 4). Medium flat vellum stock poster (OP-1 in the Eric King guide) is in good to very good (B to B/B+) condition; a series of semi-camouflaged brown tape residue shadows in the "Q" of "Quicksilver", to the right of "Service", "Tree" and "Sts.", a few stray pinch dings, tiny brown age spots, light handling along the bottom margin and a hint of corner wear, otherwise fine. An overall very decent-looking example of this early Bonnie MacLean Fillmore poster.