equipment
- https://www.dead.net/archives/1995/photos/soundboard-desert-sky-pavilion
- https://www.dead.net/archives/1973/clippings/article-guitar-player-dead-gear
- https://www.dead.net/archives/1973/photos/wall-sound-boston-music-hall
- https://www.dead.net/archives/1974/photos/grateful-dead-wall-sound
- https://www.dead.net/archives/1974/photos/wall-sound-cow-palace
- https://www.dead.net/archives/1974/photos/wall-sound-pne-colliseum
