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 decent (B/B-) condition; there is a dime-sized stain between the "a" and "t" of "Matrix, along with a tape pull and a 1&1/2" diagonal sliver of paper missing from the upper right corner, another pull with a piece of clear tape in the upper left corner, a bit of light horizontal creasing across the top margin, a few soft handling creases/light bends hiding within the image area, a couple of tiny pin-prick spots in the lower left margin/corner and a few minor edge/corner-tip dings scattered around the outer margin area, otherwise OK.

 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