Original 1st printing 11&1/2 x 17&3/8" boxing-style concert poster for the April-May 1966 schedule of shows held the Jabberwock in Berkeley, CA.

Acts listed include: Lightnin' Hopkins, Congrees of Wonders, David Bennett Cohen (Country Joe & the Fish), Robbie Basho and more.

 Designer unknown/not credited, medium-thin vellum stock silkscreen letterpress poster is in near mint to excellent (A-/B+ to B+) condition; there is a VERY soft 2&1/2" diagonal bend in the upper right corner/margin, along with a few soft handling dings here and there and a couple of VERY light edge/corner-tip bends, otherwise it is a mostly-clean example of this fairly obscure 1966 Jabberwock calendar poster, first example I have ever seen.