Pair of posters for concerts that took place at the Avalon Ballroom in San Francisco, CA. FD-61 is 14x20" second printing poster for May 12-13, 1967 concerts that featured The Doors, Sparrow, Ben Van Meter and Roger Hillyard. Art by Victor Moscoso features 3D-like dual image of angel w/subliminal face. Text in bkg. reads "Annabelle's Butterfly Dance." Corner tip wear w/some creases at corners and along margins. Fine/VF. FD-64 is 14-1/8x20" first printing poster for June 1-4, 1967 concerts that featured The Doors, Miller Blues Band and Daily Flash. Art by Victor Moscoso features psychedelic close-up image of cat's face. Poster shows moderate wear w/pin holes w/pulls at corners, some having some oxidation soiling. This is most noticeable at top left. Top corners have corner tips off and poster has some scattered age staining. VG.