publicity photos
- https://www.dead.net/archives/1966/photos/dead-front-volunteers-america
- https://www.dead.net/archives/1966/photos/pigpen-haight-street
- https://www.dead.net/archives/1966/photos/pigpen-car
- https://www.dead.net/archives/1966/photos/jerry-lying-olompali-lawn-jerry-slick
