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- Thomson, Superintendent's Monthly Report, June 1931, 2; J. A. Killa1ee, Assistant Highway Engineer, Bureau of Public Roads, Final Construction Report, Project Yosemite E4-Cl, Grading, Tioga Road, Tuolumne Meadows-Tioga Pass Section, 22 June 1936, 3.
- Press release, Tioga road construction, attached to Thomson, Superintendent's Monthly Report, November 1932; Killa1ee, 4-5.
- Killalee, 5-6; Thomson, Superintendent's Monthly Report, July 1933, 9; Superintendent's Monthly Report, August 1933, 7.
- Thomson, Superintendent's Monthly Report, September 1933, 2.
- Sweetser, 1, 9.
- Ibid., 3-9, passim.
- Greene, Il:946.
- Pavlik (thesis), 125; Killalee, 10-11.
- Pavlik (California History), 192; Albright, 220, 268-69.
- Pavlik (thesis), 4-5; T. M. Roach, Engineer, Bureau of Public Roads, Final Construction Report, Project Yosemite 4-A2, Tioga Road Clearing, 18 April 1938, 4-5.
- Thomson, Superintendent's Monthly Report, July 1934, 3, 8; Superintendent's Monthly Report, August 1934, 10; Superintendent's Monthly Report, October 1934, 9; Superintendent's Monthly Report, October 1934, 9.
- Quoted in Pavlik (thesis), 121-22.
- Ibid..
- Thomson, Superintendent's Monthly Report, August 1935, 7; Superintendent's Monthly Report, September 1935, 8-9; Superintendent's Monthly Report, November 1935, 7.
- S. F. Coffman, Engineer, Bureau of Public Roads, Final Construction Report, Project Yosemite 4-Cl, Bituminous Treated Base Course, Tioga Road, Cathedral Creek-Tioga Pass Section, 6 May 1938, 7-9, 19, 24.
- Lawrence C. Merriam, Acting Superintendent's Monthly Report, June 1937, 9; Acting Superintendent's Monthly Report, July 1937, 7; Acting Superintendent's Monthly Report, August 1937, 9; Acting Superintendent's Monthly Report, September 1937, 7; Acting Superintendent's Monthly Report, October 1937, 7.
- John B. Wosky, Acting Superintendent's Monthly Report, September 1935, 7.
- Trexler, 25.
- Cohen, 94-95.