Original 1st printing 14 x 17" concert poster for the Grateful Dead with the Flying Burrito Brothers (with Gram Parsons and Chris Hillman) and AUM appearing at the Avalon Ballroom in San Francisco, CA on 4/4-6/1969. Art by Jaxon (Jack Jackson), image is featured in the Art of Rock on page 111 (plate 2.25). Medium-thin glossy stock poster is in spectacular near mint (A-/B+) condition; aside from a small 1" diagonal bend in the bottom right corner, a few stray handling dings/pinch marks and a couple of tiny edge tears in the right margin, it's a FANTASTIC-looking example of this totally weird Jaxon Grateful Dead image. Check out a KILLER radio broadcast of the 4/6 show HERE: