concert
- https://www.dead.net/archives/1970/photos/grateful-dead-fillmore-east
- https://www.dead.net/archives/1970/photos/grateful-dead-fillmore-east-0
- https://www.dead.net/archives/1970/clippings/article-fremont-ca
- https://www.dead.net/archives/1970/clippings/article-st-louis-post-dispatch
- https://www.dead.net/archives/1970/clippings/article-san-francisco-chronicle-ralph-gleason
- https://www.dead.net/archives/1970/photos/pigpen