Original 1st printing 17&1/8 x 22&3/8" concert poster for the October 1968 schedule of shows held at the Matrix in San Francisco, CA. Shows listed include: Elvin Bishop from 10/8-12, Jerry Garcia (GARRCEEAH) and Friends (A/K/A "Mickey & the Hartbeats") from 10/8-10, "Marvel" (Marble) Farm from 10/11-12, Harvey Mandel and Mad River from 10/15-17, Allmen Joy from 10/18-19, Mint Tattoo from 10/22-24, Steve Miller from 10/22-16 and Linn County from 10/25-27. 

 Art by George Chacona and Marty Rice, image is featured in the Art of Rock on page 166 (plate 2.118).

 Medium flat vellum stock poster is in very good (B/B+) condition; there are a series of VERY light/soft horizontal roll creases, along with a few stray edge/corner-tip dings scattered around the outer margin, a touch of toning and a few light handling dings/stress creases/pin-prick spots hiding within the image area, otherwise fine.

 Very cool-looking Rick Griffin-influenced concert poster from the Matrix. Stream the 10/8 show HERE:

https://archive.org/details/gd68-10-08.sbd.belaff.17691.sbeok.shnf