Original 1st printing (OP-2 in the Eric King guide, no "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 excellent (B+) condition; there is a VERY thin semi-soft horizontal/diagonal bend traversing the top margin, along with an approximately 2" area of minor creasing/paper tightening in the lower left margin, a couple of small corner bends and a few stray handling/edge dings scattered around the outer margin area, otherwise fine. 

 Great-looking example of this iconic early-'67 Mouse/Kelley image from the Avalon.