promo flyer
- https://www.dead.net/archives/1969/artwork/grateful-dead-promo-flyer-sept-69-page-1-3
- https://www.dead.net/archives/1969/artwork/grateful-dead-promo-flyer-sept-69-page-2-3
- https://www.dead.net/archives/1969/artwork/grateful-dead-promo-flyer-sept-69-page-3-3
