Original 1st printing 14 x 19&7/8" early 1967 fan club promotional poster for the good ol' Grateful Dead. 

 Art by Stanley Mouse (who also SIGNED the poster in black flair pen) and Alton Kelley, featuring photos by Herb Greene, image ("The Golden Road to Unlimited Devotion") is featured in the Art of Rock book on page 187 (plate 2.192).

 Medium-thick flat vellum stock poster is in near mint to excellent (A-/B+ to B+) condition; there are a series of 5-6 ultra-thin almost invisible horizontal roll bends traversing the image area (the entire length of the poster, spaced about 2" apart), plus a couple of VERY minor edge/corner dings, a stray fingerprint or two and tiny 1/8" tear in the upper right margin, otherwise fine.

 Absolutely fantastic-looking ARTIST-SIGNED example of this perennially popular Mouse & Kelley Grateful Dead image from the AOR.