1. American Society of Civil Engineers, Committee on Denver Subsoils, 1954, Borehole data and engineering applications in Denver area: Denver, Colorado, Hotchkiss Mapping Co., 62 p.
2. Asphalt Institute, 1964, Soils manual for design of asphalt pavement structures: Asphalt Institute Manual Series No. 10, 261 p.
3. Burket, J. M., 1965, Geology of Waco: Baylor Univ., Geological Studies Bull. No. 8, p. 9–46.
4. Casagrande, A., 1948, Classification and identification of soils: Trans. Soc. Civil Engineers, v. 113, p. 901–991.
5. Dawson, R. F., 1959, Modern practices used in the design of foundations for structures on expansive soils: Colorado Sch. Mines Quart., v. 57, no. 4, p. 67–88.