Original 1st printing 22 x 28&1/4" concert poster for a quartet of Bill Graham-produced 1970 shows at the Fillmore West and San Francisco, CA; Iron Butterfly with Aum and Black Oak Arkansas on 8/24-26, John Mayall with the Herbie Hancock Sextet and Elvin Bishop on 8/27-29, Savoy Brown with Fairport Convention and Chicken Shack on 8/30-9/1 and Johnny Winter with Freddie King and Boz Scaggs on 9/3-5. Design by Alton Kelley, image is # 245 in the Bill Graham/Fillmore series. Medium glossy coated index stock poster is in very good to excellent (B/B+ to B+) condition; a few scattered light pinch/handling bends in each of the four corners and a few small dings around the outer edges, a couple of tiny stress bends, light handling (a few pinch marks/fingerprints) and a pair of bends in the upper right and bottom left corners, otherwise a superb-looking example of this large-format 1970 Fillmore poster with a really sharp Kelley design.