Filtering by
- All Subjects: Flora and fauna
- All Subjects: Cramton, Louis Convers, 1875-1966
- All Subjects: Smith, George Otis, 1871-1944
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
- Status: Published
Letter from George Otis Smith to Carl Hayden regarding mining rights in the Grand Canyon.
Letter from Carl Hayden to George Otis Smith asking his advice regarding the mining of asbestos deposits in the Grand Canyon.
Letter from George Otis Smith, U.S. Geological Survey to Carl Hayden regarding asbestos mining prospects in the Grand Canyon.
Letter from J. E. Gavin to Louis C. Cramton regarding the Bright Angel Trail controversy, including newspaper clipping.
Press release on the increase in wildlife in the Grand Canyon including mountain sheep, deer, and the Abert Squirrel.
Letter from Carl T. Hayden to Louis C. Cramton about potential prosecution of people with mining claims within park boundaries.
Typescript report, black and white, describing the mammals of Grand Canyon National Park with cover drawing of a bighorn sheep.
Typescript report, black and white, describing the birds of Grand Canyon National Park with cover drawing of a bald eagle.
