Promotional print advertising the Grateful Dead's May, 13th 1977 sold out performance at the Auditorium Theatre in Chicago, IL. More specifically, the poster advertises radio station WXRT 93's Live FM Broadcast of the show, which resulted in the shows heavy circulation amongst fans/tape traders immediately following the performance. This show was released as part of the "May 1977" box set, for which this FM Broadcast's recording was used.
