Filtering by
- All Subjects: Civilian Conservation Corps (U.S.)
- All Subjects: Gilliland, Richard P., 1883-1966
- All Subjects: Heard, Dwight Bancroft, 1869-1929
- All Subjects: Smith, George Otis, 1871-1944
- All Subjects: World War, 1914-1918
- Creators: Hayden, Carl T.
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 L. L. Ferrall on the favorable conditions for creating a national park and the prospect of the United States entering WW I.
Letter of introduction for Dwight B. Heard on the arrival of National Park Service Director Stephen T. Mather to Phoenix. Mather's visit includes trips to Roosevelt Dam and Tumacácori.
Letter from Carl Hayden to R.P Gilliland regarding the sale of Bright Angel Trail (Ariz.) and construction of the President's Highway from Maine, AZ to the Grand Canyon.
Letter from Carl Hayden to J. V. Lloyd, Assistant Superintendent of Grand Canyon National Park, thanking him for his support in maintaining Civilian Conservation Corp companies at full strength. Handwritten note in red pencil, "Jack - For my attention in January. Hayden."