Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Advertisements
- All Subjects: Camping
- All Subjects: Edwards, John Homer, 1869-1945
- Creators: United States Department of the Interior
- Creators: Finney, E. C.
- Creators: Borkan, Ronald E.
- Creators: Edwards, John H.
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Letter from E. C. Finney to Carl Hayden regarding the cost of the Bright Angel Trail and an improved road between the town of Maine and the Grand Canyon.
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Four letters of correspondence about the purchase of Bright Angel Trail between A. E. Demaray, Acting Director of the Grand Canyon National Park; E. C. Finney, Department of the Interior First Assistant Secretary; Carl T. Hayden, Representative (AZ); and Stephen T. Mather, Director of the National Park Service.
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Handwritten cover titled, "Nature Notes of Grand Canyon, Polyphemus Moth, Female, Found at Grand Canyon, 5 July 1928, Vol. 3 - No. 2." Cover includes a drawing of the moth.
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Typescript report, black and white, describing the birds of Grand Canyon National Park with cover drawing of a bald eagle.
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Typescript report, black and white, describing the mammals of Grand Canyon National Park with cover drawing of a bighorn sheep.
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Cooperative National Park Resources Studies Unit for University of Arizona, effects on Glen Canyon Dam releases on Grand Canyon River trips, a technical report, vol. no. 16.