Original 1st printing 8&1/2 x 11" concert flyer for the Grateful Dead and the Sons of Champlin appearing at the Straight Theater in San Francisco, CA on 9/27-28/1967. Designer unknown, image is featured in the Art of Rock on page 201 (plate 2.225). Thin flat stock flyer is in absolutely stunning near mint (A- to A-/B+) condition; a trace of edge toning along the bottom left margin, a couple of extra-tiny edge dings and a soft pinch bend in the top margin, otherwise fine. Additionally, this example has been SIGNED in blue ballpoint by drummer Mickey Hart (to commemorate the occasion of his debut performances with the band on 9/29). KILLER early Dead piece with very important historical significance.