Betty Nelson's Organic Raspberry Farm
- https://www.dead.net/archives/1968/clippings/article-downbeat-about-sky-river-festival
- https://www.dead.net/archives/1968/photos/phil-looking-his-amp-sky-river-festival
- https://www.dead.net/archives/1968/photos/bobby-singing-sky-river-festival
- https://www.dead.net/archives/1968/photos/bobby-sky-river-festival
- https://www.dead.net/archives/1968/photos/jerry-playing-front-crowd-sky-river-festival
- https://www.dead.net/archives/1968/photos/mickey-playing-front-american-flag-sky-river-festival