Original 1st printing (Adprint of Los Angeles) 19&1/2 x 27&1/4" concert poster for Jefferson Airplane appearing with Charley Musselwhite, Clear Light and the Ceyleib People at the Shrine Exposition Hall in Los Angeles, CA from 2/23-24/1968.
Art by John Van Hamersveld, image is featured in the Art of Rock book on page 275 (plate 3.66) and is part of the Pinnacle Presents series.
Medium-thick flat index stock poster has been professionally restored to excellent to near mint (B+ to B+/A-) condition; there have been repairs/fills in all four corners and around the outer edges with a bit of touch-up in several areas (if you enlarge the photo, the darker spots of green are the restored areas), along with a thin flattened diagonal bend in the upper right corner, a tiny surface ding or two but overall, this one looks really, REALLY nice. Great restoration work, whoever did it.
A great-looking example of this very hard-to-find 1st printing Pinnacle poster; I've seen hundreds of the Personality Posters reprint of this image over the years, this is only the third or fourth original I have come across.