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- All Subjects: Grand Canyon National Park (Ariz.)
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- All Subjects: Edwards, John Homer, 1869-1945
- Creators: United States Department of the Interior
- Creators: Akers, Charles H.
- Creators: Borkan, Ronald E.
- Creators: Edwards, John H.
- Creators: National Park Service, U.S. Dept. of the Interior
Letter from Charles H. Akers to Carl Hayden expressing his support for the National Park bill.
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.
Pamphlet: "Grand Canyon, Visitors' Guide to Grand Canyon National Park in Arizona," map of North Rim.
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.