Original 1st printing (OP-1 in the Eric King guide, with "Double-H Press" credit) 14&1/8 x 20" concert poster for Moby Grape appearing with the Sparrow and the Charlatans at the Avalon Ballroom in San Francisco, CA from 1/13-14/1967. *poster also mentions the 1/14/1967 Gathering of the Tribes/Human Be-In held in Golden Gate Park.
 
 Art by Stanley Mouse with Alton Kelley, image is # 43 in the Family Dog/Avalon series.
 
 Medium-thin flat index stock poster is in very good (B/B+) condition; there are a pair of thin vertical tape residue shadows in the top/bottom center margins (as well on the reverse side, with a small tape pull at the base of the tape mark in the top margin), along with a couple of tiny corner-tip pressure creases and a nearly-invisible handling ding or two hiding within the image area, otherwise fine. 

 Great-looking 1st printing "Double-H" version of this iconic early-'67 Mouse/Kelley image from the Avalon.