Original 1st printing 13 x 19&7/8" concert poster for the Grateful Dead appearing with Country Joe & the Fish in a "Danse Macabre" at the Pauley Ballroom on the campus of UC Berkeley on 12/2/1966. Art by Ruth Garbell, medium-thick flat vellum stock poster is in excellent (B+) condition; aside from an ultra-thin diagonal bend that extends from about 1/2" from the bottom left corner to just over the "C" of "Class" and a stray pinch ding or two, it's an absolutely fantastic-looking example of this early (1966) East Bay Dead/Country Joe poster with a very strange design.