Original 1st printing (union logo #72) 13&1/4 x 19&1/8" concert poster for Country Joe & the Fish appearing with Lee Michaels and Moby Grape at the Avalon Ballroom in San Francisco, CA from 12/30-31/1966.
 
 Art by Stanley Mouse and Alton Kelley, image is # 41 in the Family Dog/Avalon series.
 
 Medium flat vellum stock poster is in near mint to excellent (A-/B+ to B+) condition; aside from a touch of handling and a light set of tape pulls with a "Lorin Gilette Distributor" stamp on the reverse, it is an EXCEPTIONALLY nice-looking example of this always-in-demand 1st printing Mouse/Kelley Avalon poster.