Original 1st printing 21&3/4 x 26&1/4" concert poster for the Grateful Dead appearing with the Sons of Champlin and Initial Shock at the Avalon Ballroom In San Francisco, CA from 1/24-26/1969.
 
 Art by Rick Griffin, image ("Aoxoamoxoa") is featured in the Art of Rock book on page 109 (plate 2.24) and is part of the Soundproof Presents series.
 
 Medium-thick glossy-coated index stock poster is in near mint to excellent (A-/B+ to B+) condition; there are a couple of areas of pin-prick surface rubbing/wear (or a printing/press anomaly- tough to say) around the outer margin area, along with one or two nearly-invisible handling dings hiding within the image area, it is an EXCEPTIONALLY nice-looking example of the perennially-popular 1st printing Soundproof Aoxomoxoa poster.

 The colors on this one are bright/strong with no real evidence of fading/discoloration (a somewhat common issue with most used/displayed examples). VERY sharp-looking specimen. Check out the 1/26 show (a great-sounding Charlie Miller transfer) HERE:

https://archive.org/details/gd1969-01-26.sbd.miller.109642.flac16