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- https://www.dead.net/archives/1970/clippings/article-variety-new-york
- https://www.dead.net/archives/1970/clippings/article-billboard-cincinnati
- https://www.dead.net/archives/1970/artwork/new-riders-purple-sage-matrix-san-francisco-poster
- https://www.dead.net/archives/1970/clippings/article-variety
- https://www.dead.net/archives/1970/clippings/advertisement-grateful-dead-show
- https://www.dead.net/archives/1970/photos/new-riders-purple-sage-mickeys-ranch
