Original 1st printing 17&1/2 x 22&1/2" untrimmed printer's test proof (blue pass only) concert poster for Canadian folk hero Gordon Lightfoot appearing at Hill Auditorium on the campus of the University of Michigan in Ann Arbor, MI on 2/12/1972. (*also mentions a Delaney & Bonnie and Friends/Billy Preston show at Hill the following weekend (2/19) 

 Art by (and SIGNED in black flair pen by) Gary Grimshaw, medium-thick vellum stock poster is in very good (B/B+) condition; there are a pair of light brown tape residue marks in the ticket outlet area, a few tiny edge dings and light creases scattered around the outer margin area, a tiny wedge tear in the bottom right corner tip, a hand-written printer's notation (26%) in the lower right margin and a minor amount of surface wear/light handling, otherwise fine.

 VERY unusual one-of-a-kind SIGNED Gary Grimshaw proof from Ann Arbor.