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- John C. Preston, Yosemite National Park Superintendent, "Statement by Superintendent John C. Preston Concerning the Tioga Pass Controversy at the Region Four Conference, Death Valley National Monument, January 11-16, 1959," typed MSS, 3. Yosemite Research Library.
- Walter L. Huber, Yosemite National Park Board of Expert Advisors, to Conrad L. Wirth, National Park Service Director, 4 June 1956. Yosemite Research Library.
- Trexler, 24-26.
- Ansel Adams with Mary Street Alinder, Ansel Adams: An Autobiography (Boston: Little, Brown and Company, 1985), 154.
- Ansel Adams to Harold Bradley, Richard Leonard and David Brower, 27 July 1957, in Ansel Adams: Letters and Images, 1916-1984 (Boston: Little, Brown & Company, 1988), 247.
- Cohen, 142-43.
- Ibid., 60-61,93,99.
- Wirth, 358.
- Preston, "Statement," 3-5.
- "Parks Director Will Check on Tioga Dispute," Fresno Bee, 13 August 1958; Virlis L. Fischer, "The Tioga Pass controversy," American Forests, January 1959, 21, 61; "Yosemite Road Hassel (sic) Settled," (San Francisco) Chronicle, 21 August 1958.
- "Plan is started for New Tioga Road Links," Fresno Bee, 29 September 1958.
- Adams, "Tenaya Tragedy," 4, 17.
- National Park Service, Tioga Road Dedication Brochure, June 1961.
- Trexler, 25.
- Preston, "Preliminary Remarks made by Superintendent John C. Preston concerning the Tioga Pass controversy at the Region Four Conference, Death Valley National Monument, January 11-16, 1959," Typed MSS, Yosemite Research Library.
- Preston, "Statement," 3.
- Memo, Preston to Merriam, 29 September 1960; Memo, Merriam to Preston, 14 October 1960.
- Peter Browning, Yosemite Place Names (Lafayette, CA: Great West Books, 1988), 62.
- "One of the World's Best Sights, Says Wirth of Tioga View," Fresno Bee, 24 June 1961; Trexler, 26.
