Grateful Dead
- https://www.dead.net/archives/1971/clippings/warner-brothers-letter-promo-pictures
- https://www.dead.net/archives/1971/clippings/grateful-dead-lp-story-page-2-4
- https://www.dead.net/archives/1971/photos/grateful-dead-lp-promo-display-1
- https://www.dead.net/archives/1971/clippings/grateful-dead-lp-promotion-page-1-5
- https://www.dead.net/archives/1971/photos/grateful-dead-lp-sales-display
- https://www.dead.net/archives/1971/clippings/warner-brothers-letter-tower-records