Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: McKee, Edwin Dinwiddie, 1906-1984
- All Subjects: Mining
- All Subjects: Natural resources
- Creators: United States Department of the Interior
- Creators: Hamilton, Ed
Letter from Ed Hamilton to Carl Hayden outlining his opposition to Superintendent Tillotson's report on the road between Grand Canyon Village and Rowe's Well.
Letter from Ed Hamilton to Carl Hayden requesting maintenance for the road between Grand Canyon Village and Rowe's Well.
Letter from Ed Hamilton to Carl Hayden regarding the storage of dynamite in Shoski Canyon.
Typescript report, black and white, describing the mammals of Grand Canyon National Park with cover drawing of a bighorn sheep.
Typescript report, black and white, describing the birds of Grand Canyon National Park with cover drawing of a bald eagle.
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.