Matching Items (3)
Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Grand Canyon (Ariz.)
- Creators: Underhill, A. Heaton
- Creators: Finney, Finney
ContributorsFinney, Finney (Author)
Created1918-06-26
Description
Letter to Carl T. Hayden regarding a water-power bill in effect for the Grand Canyon.
ContributorsGreenberg, Laura B. (Author) / Underhill, A. Heaton (Author) / Cooperative National Park Resources Studies Unit, University of Arizona (Publisher)
Created1986-03
DescriptionCooperative National Park Resources Study Unit of Arizona, a special report, v no. 4, improving viistor communciation in Grand Canyon National Park
ContributorsUnderhill, A. Heaton (Author) / Borkan, Ronald E. (Author) / Battelle Memorial Institute. Technology Partnership Practice (Publisher)
Created1986-04
Description
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.