Original 1st printing 12&7/8 x 21&5/8" concert poster for the Grateful Dead (misspelled "Greatful Dead"), appearing with the Real Thing and Autumn People (lights by Marshmellow Cannon) at the Continental Ballroom (Auditorium) in Santa Clara, CA on 5/20/1967.
Art by Cannon, image is featured in the Art of Rock book on page 233 (plate 2.343).
Thick flat vellum stock poster is in good/decent (B to B/B-) condition; multiple tack/staple holes in all four corners and in the top/bottom center margin, a series of semi-pronounced horizontal bends, a few stray tiny surface scuffs and "chipped" areas, a few loose tiny pin-prick surface stains, a minor amount of edge wear and a set of decent-sized tape pulls on the reverse, otherwise fine.
VERY hard-to-find low-run regional Grateful Dead poster from the Art of Rock book.