Color glossy 11 x 14 photo of a Monterey Pop Festival poster, signed in felt tip and ink by 11 participants: Michelle Phillips, Donovan, Grace Slick (signing “Glap Slick”), Country Joe McDonald, Booker T. Jones, Steve Cropper, Donald ‘Duck’ Dunn, Richey Furay, Gary Duncan, Marty Balin, and Dave Freiberg. In very fine condition. R&R COA.