Original 1st printing 5 x 7" concert handbill 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-thin flat vellum stock handbill is in STUNNING mint/near mint to near mint (A/A- to A-) condition; maybe there is a stray soft pinch ding or two hiding somewhere, but for the most part it is an extremely sharp/clean example of this somewhat hard-to-find Greg Irons image from mid-1967.
Fantastic design featuring the one and only Dr. Strange!