Matching Items (3)
Filtering by
- All Subjects: Hayden, Carl Trumbull, 1877-1972
- All Subjects: Desert conservation
- Creators: Dickinson, Alf
- Creators: Nabhan, Gary Paul
- Creators: R. P. Gilliland, R. P. Gilliland
ContributorsR. P. Gilliland, R. P. Gilliland (Author)
Created1923-10-10
Description
Letter from R.P Gilliland to Carl Hayden regarding the sale of Bright Angel Trail (Ariz.) and construction of the President's Highway from Maine, AZ, to the Grand Canyon.
ContributorsDickinson, Alf (Author)
Created1926-04-27
Description
Letter from Alf Dickenson to Carl T. Hayden about securing mining permits within the park.
ContributorsNabhan, Gary Paul (Author) / Pima County (Ariz.). County Administrator's Office (Publisher)
Created2000-02
Description
Takes a comprehensive view of ironwood habitats in both the United States and Mexico, evaluating the ecological and cultural resources supported by the ancient ironwood tree. The study provides an overview of the history and ecology of desert ironwood, and a discussion of the binational research effort undertaken to produce the report.