As per David Lemieux: "There are reels in the vault clearly marked with the date and venue of some of these shows, which have been scratched out, as the tapes were recorded over."
Partial Show: Good Morning Little Schoolgirl, Midnight Hour, Deep Elem Blues, Cold Rain And Snow, Big Boss Man, Cryptical Envelopment > The Other One > Cryptical Envelopment, I Know You Rider