https://www.dead.net/archives/1983/clippings/grateful-dead-plans-start-their-own-mail-order-ticket-company-page-1-2
https://www.dead.net/archives/1983/clippings/grateful-dead-plans-start-their-own-mail-order-ticket-company-page-2-2
https://www.dead.net/archives/1983/clippings/grateful-dead-warfield-theater-benefit-press-release
https://www.dead.net/archives/1983/clippings/grateful-dead-bill-graham-presents-warfield-theatre-benefit-shows
https://www.dead.net/archives/1983/clippings/grateful-dead-bill-graham-presents-warfield-theatre-benefit-shows-0
https://www.dead.net/archives/1981/clippings/grateful-dead-productions-formation