Notes
cxl; LIA: "the date comes from The Illustrated Trip (Peters et al. 2003, 128). A newspaper column (Larry Lujack, "A DJ's Status Report," Chicago Tribune, May 7, 1971, p. B11) says the GD "pulled a last-minute cancellation at Northern Illinois University a few weeks ago"), presumably referring to this event or a slightly later attempt to reschedule it.