Original 1st printing 14 x 20&1/2" concert poster for the Youngbloods appearing with Wildflower, Magic Fern and "Chapter 3 of the Junior G-Men" at California Hall in San Francisco, CA from 7/21-22/1967.
 
 Art by Greg Irons, image ("Strange Happenings") is featured in the Art of Rock on page 174 (plate 2.140).

 Medium flat vellum stock poster is in excellent (B+) condition; there are pin/tack holes in the "Space Age" logo, in the top/bottom center margins and in the upper and lower right corners, along with a hint of surface wear and an approximately 2" tape pull on the reverse side (where the "Hap" of "Happenings" is on the front side) with a couple of small flair-pen notations on the reverse top margin and lower left corner tip, otherwise fine.

 Most of the conditional issues on this example are limited to the outer margins and the reverse side, the image area is VERY sharp/clean.