group
- https://www.dead.net/archives/1966/photos/grateful-dead-jack-casaday
- https://www.dead.net/archives/1966/photos/grateful-dead-0
- https://www.dead.net/archives/1966/photos/grateful-dead
- https://www.dead.net/archives/1967/photos/grateful-dead
- https://www.dead.net/archives/1967/photos/grateful-dead-0
- https://www.dead.net/archives/1979/photos/spartan-stadium
