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- Ibid., 10.
- Trexler, 8.
- Benson, Report of the Acting Superintendent of Yosemite National Park to the Secretary of the Interior, 1907 (Washington: Government Printing Office, 1907), 8-9.
- Idem, Report of the Acting Superintendent, 1905, 15.
- Trexler, 17.
- Mary Hall Crocker, Crocker's Station, to Benson, 28 September 1907, Yosemite Research Library.
- Benson, Report of the Acting Superintendent, 1909, 9.
- Deposition of Mary Hall Crocker, June 1912. Yosemite Research Library.
- Quoted in Trexler, 9.
- Ibid., 10.
- Horace M. Albright with Robert Cahn, The Birth of the National Park service: The Founding Years, 1913-33 (Salt Lake City, UT: Howe Brother, 1985), 19-21.
- Robert Shankland, Steve Mather of the National Parks (New York: Alfred A. Knopf, 1954), 19; William E. Colby, Big Sur, California to Keith Trexler, Yosemite National Park, 17 May 1961. Yosemite Research Library.
- Colby to Trexler.
- Albright, 21.
- Trexler, 19-20.
- Ibid., 19.
- George V. Bell, Report of the Superintendent of the Yosemite National Park to the Secretary of the Interior, 1915. (Washington: Government Printing Office, 1909), 14; "Tioga Pass," 8.
- American Automobile Association, Travel News Bulletin, No.8, May 1947. (Quoted on NPS historical marker along Tioga Road at Gin Flat.)
- Mark Daniels, " Report of the Landscape Engineer of the National Parks,· in Reports of the Department of the Interior, 1915, (Washington: Government Printing Office, 1916), I:850.
- C. H. Sweetser, Engineer, Bureau of Public Roads, Location Survey Report, Tioga Road, Crane Flat-White Wolf Section, 11 June 1934, 3 .
