- Retained publication information from the printed edition: this eBook is public-domain in the country of publication.
- Corrected a few palpable typos.
- Included a transcription of the text within some images.
- In the text versions only, text in italics is delimited by _underscores_.
- The HTML version contains relative hyperlinks to a companion volume on Canyonlands National Park, Gutenberg eBook #51048.
- A third book in the series, on Colorado National Monument, was revised after this book was printed.
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