Original 1st printing 13&3/4 x 28" concert poster for "Bilbo's Birthday", a show featuring Big Brother & the Holding Company (featuring Janis Joplin) appearing with the Great Society (featuring Grace Slick) and the Charlatans at California Hall in San Francisco, CA on 7/28/1966.

 

 Art by Passalaqua, image is featured in the Art of Rock on page 177 (plate 2.156). 

 Medium-thick flat vellum stock poster is in very good to excellent (B/B+ to B+) condition; there is a light amount of toning, a few creases/thin bends and a couple of tiny edge tears along the upper/lower margins, along with a few stray pinch dings/tiny surface scuffs hiding within the image area and a light amount of surface wear, otherwise fine.

 

 An overall superb example of this very strange-looking mid-'66 California Hall poster. VERY early Janis/Big Brother piece!