A CONCERT POSTER - MISSISSIPPI RIVER FESTIVAL, EDWARDSVILLE, ILLINOIS, AUGUST 16, 1980 Image depicts a skull wearing a red robe while playing a violin; text reads in part Music Theatre / Presents / The / Grateful / Dead / Saturday / August 16, 1980 / 6:30 P. The poster is still wrapped and is resting on cardboard. There is a slight bend to the bottom of the cardboard but it looks like that is not the case with the poster though. Please see the photos for more details.