Original 1st printing 14 x 22" concert poster for Lightning Hopkins appearing with the P.H. Phactor Jug Band at the Matrix in San Francisco, CA from 4/19-24/1966.

 Designer/photographer unknown/not credited, image (an earlier version from 1965 with Jefferson Airplane) is featured in the Art of Rock book on page 161 (plate 2.104). 

 Thick flat index stock poster is in very good to excellent (B/B+ to B+) condition; there are staple holes and minor bits of creasing in all four corners, along with a hint of surface wear (a few soft smudges, a thin diagonal scratch going through "King of the Blues"), a couple of nearly-invisible soft hairline roll bends along the right margin, a few tiny edge/corner-tip creases and a thin vertical hairline bend along the upper right margin, otherwise fine.

GREAT-looking example of this semi-elusive AOR poster from the Matrix.