Original 1st printing (Bindweed Press credit, yellow background) 13&7/8 x 19&7/8" conference/event poster for the Sierra Club's 10th Biennial Wilderness Conference held at the Hilton Hotel in San Francisco, CA on 4/7-9/1967.

 Art by Stanley Mouse (who has also SIGNED the poster in gold ink) and Alton Kelley, image (the silver-background Berkeley Bonaparte 2nd printing) is featured in the Art of Rock book on page 239 (plate 2.365).

 Medium flat vellum stock poster is in good/decent (B to B/B-) condition; there are a series of thin horizontal stress/roll bends traversing the image area, along with a bit of mild paper toning, a few stray soft pin-prick age spots hiding around the outer margin area, a small tear along the lower right margin, a few small pressure creases/dings scattered around the outer margin area and the reverse side has a set of tape pulls, a bit of toning and a soft splatter stain... definitely not mint, but not too bad- a fairly decent-looking example overall with a very nice gold-ink Mouse signature.