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- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Advertisements
- 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.
- Creators: Ringland, Arthur
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.
Letter from Arthur Ringland to Carl Hayden about road alignment survey through the Buggeln ranch.
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.
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.
Typescript report, black and white, describing the birds of Grand Canyon National Park with cover drawing of a bald eagle.
Typescript report, black and white, describing the mammals of Grand Canyon National Park with cover drawing of a bighorn sheep.