Original 1st printing 14&1/8 x 20&1/8" concert poster for the Dinosaurs (featuring John Cipollina (Quicksilver Messenger Service), Robert Hunter (Grateful Dead), Spencer Dryden (Jefferson Airplane), Peter Albin (Big Brother & the Holding Company) and Barry Melton (Country Joe & the Fish) appearing with fellow 1960's-era rockers the Flamin' Groovies at the Old Waldorf in San Francisco, CA on 8/13/1982.
Art by (and SIGNED in pencil by) Alton Kelley, this image is #1 in the Dinosaurs series.
Medium-thick flat index stock (glossy on reverse) poster is in near mint to excellent (A-/B+ to B+) condition; aside from a couple of VERY well-camouflaged hairline pinch dings hiding within the image area and a slight surface stain/discoloration in the upper right-center margin, otherwise it is a fantastic-looking SIGNED example of Kelley's very first Dinosaurs image.
Check out the show HERE:
https://archive.org/details/dinosaurs1982-08-13.aud.flac16