Matching Items (6)
Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- Creators: Moran, P. J.
- Creators: Underhill, A. Heaton
- Creators: Babbitt, Herbert
- Creators: United States Government Printing Office
ContributorsMoran, P. J. (Author)
Created1925-04-08
Description
Letter from P. J. Moran to Carl T. Hayden inquiring when construction will begin on the approach road to Bright Angel Trail.
ContributorsBabbitt, Herbert (Author)
Created1925-12-02
Description
Letter from Herbert Babbitt to Carl T. Hayden about grazing cattle in the park boundaries.
ContributorsMoran, P. J. (Author)
Created1926-03-24
Description
Letter from P. J. Moran to Carl T. Hayden inquiring when construction will begin on the approach road to Bright Angel Trail.
ContributorsUnited States Government Printing Office (Publisher)
Created1933
DescriptionHistorical overview of 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.