warner bros. records
- https://www.dead.net/archives/1967/clippings/angry-letter-warner-brothers-page-1-2
- https://www.dead.net/archives/1967/clippings/angry-letter-warner-brothers-page-2-2
- https://www.dead.net/archives/1968/artwork/album-cover-anthem-sun-remix
- https://www.dead.net/archives/1968/clippings/pigpen-look-alike-contest-promo-anthem-sun
- https://www.dead.net/archives/1969/artwork/warner-brothers-promotion-poster
- https://www.dead.net/archives/1969/artwork/album-art-live-dead
