Matching Items (3)
Filtering by
- All Subjects: Grand Canyon (Ariz.)
- All Subjects: Desert conservation
- Creators: Smith, George Otis
- Creators: Regan, John J.
ContributorsSmith, George Otis (Author)
Created1918-05-01
Description
Letter from George Otis Smith to Carl Hayden regarding mining rights in the Grand Canyon.
ContributorsSmith, George Otis (Author)
Created1918-04-23
Description
Letter from George Otis Smith, U.S. Geological Survey to Carl Hayden regarding asbestos mining prospects in the Grand Canyon.
ContributorsFonseca, Julia (Author) / Regan, John J. (Author) / Pima County (Ariz.). County Administrator's Office (Publisher)
Created2001-10
Description
If one species had to be chosen to preserve and restore, perhaps it should be cottonwood. Cottonwood-willow forests, where they exist and are healthy, indicated the presence of a viable riparian area, which is in turn the key to conserving great proportions of our native species. A reflection of the dire status of our riparian systems is that the Sonoran cottonwood-willow and Sonoran mesquite-cottonwood forests.