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 and Alton Kelley, image (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 (B) condition; there is a 1/2 x 1/4" triangular wedge missing from the lower left corner tip, a slightly rounded lower right corner tip, light toning, a couple of small pin-prick surface stains hiding in the yellow pass of ink, a bit of light handling wear and a few stray edge creases/nips scattered around the outer margin area, otherwise OK.

 Nice-looking semi-used example of the FIRST (Bindweed) Wilderness Conference poster.