Filtering by
- All Subjects: Bright Angel Trail (Ariz.)
- All Subjects: Mining
- All Subjects: McKee, Edwin Dinwiddie, 1906-1984
- All Subjects: Automobiles
- Creators: Hayden, Carl T.
- Creators: United States Department of the Interior
Letter from Carl Hayden to George Otis Smith asking his advice regarding the mining of asbestos deposits in the Grand Canyon.
Letter from Carl Hayden to Fred S. Breen regarding Yaki Point, the sale of Bright Angel Trail and the building of a road between Maine and the Grand Canyon.
Letter from Carl Hayden to Stephen Mather regarding Coconino County's willingness to dispose of Bright Angel Trail as long as the funds acquired would go to building a road between Old Trails Highway at Maine to the Grand Canyon.
Letter from Carl Hayden to M. J. Riordan expressing his support for Coconino County in turning over the Bright Angel Trail to the federal government.
Letter from Carl T. Hayden to Louis C. Cramton about potential prosecution of people with mining claims within park boundaries.
Letter from Carl T. Hayden to Michael J. Riordan explaining the benefits of selling Bright Angel Trail and building an approach road.
Letter from Carl T. Hayden to P. J. Moran concerning the alignment of the road to Bright Angel Trail.
Letter from Carl T. Hayden to Alf Dickenson about mine locations within the park.