Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Advertisements
- All Subjects: Edwards, John Homer, 1869-1945
- All Subjects: Natural resources
- Creators: United States Department of the Interior
- Creators: Borkan, Ronald E.
- Creators: Edwards, John H.
- Creators: Leedshill-Herkenhoff, Inc.
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.
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.
Grand Canyon National Park airport master plan, final report: inventory, aviation forecasts, demand/capacity analysis, airport requirements, airport plans, financial plan environmental review.