Merl Jr. says it was canceled for GD schedule. Quote from Daily Iowan (Hawkins-Shirk 1973) after Liza Minelli canceled, Roberta Flack and Van Morrison fell through: "CUE hurriedly contacted a Chicago promoter who told CUE there was a possibility of arranging a concert with Jerry Garcia and Merle [sic] Saunders. But because the Grateful Dead, of which Garcia is a member, did not want Garcia to participate, that concert didn't materialize either".
