Original 1st printing 15&7/8 x 22" concert poster for Alice Coltrane appearing with Leon Thomas and CJQ at Hill Auditorium on the campus of the University of Michigan in Ann Arbor, MI on 3/17/1973.
Art by Gary Grimshaw, image is featured in the Art of Rock on page 394 (plate 4.188).
Medium-thick flat vellum stock poster is in absolutely GORGEOUS near mint (A-) condition; aside from a small hand-applied 2&1/2" black marker line in the ticket outlet strip, a negligible amount of light handling wear and a couple of tiny pieces of tape residue on the reverse, this example is just about as sharp/crisp as they come.
REALLY cool-looking (and uncommon) early-'70's Grimshaw image from the Art of Rock.