Original 1st printing 16 x 21&5/8" concert poster for a free show (part of a series of free Sunday Afternoon concerts) held at Otis Spann Memorial Field in Ann Arbor, MI on 7/8/1973.

 Poster lists appearances by: Sky King Blues Band, LAW, Skip "Vanwinkle" Knape and the Nightrockers and the Ann Arbor Afro-American Drum & Dance Troupe.

 Art by Gary Grimshaw, medium index stock poster is in excellent (B+) condition; there are a series of thin semi-pronounced tiny stress bends scattered around the image area and outer margins, a number of light handling dings, a tiny edge tear in the upper left margin and a whisper of surface wear, otherwise fine.

 REALLY cool oddball Grimshaw/Rainbow Graphics piece from Ann Arbor, this image was a reusable "blank" that had each week's lineup individually hand-silkscreened onto the center of the poster. This particular example features extra-bright day-glo red ink.