1. CURTIS, N.M., Jr. and HAM, W.E., 1972, Geology and Earth Resources of Oklahoma. An atlas of maps and cross-sections:Oklahoma Geological Survey Educational Publication, no. 1, p. 3.
2. BARKER, M., BOZEMAN, J., and BOZEMAN, S., 1979, Gyp Falls karst system, Central Oklahoma Grotto, Oklahoma City:Oklahoma Underground, v. 8, p. 3–9 + plates, figs. and maps.
3. BOZEMAN, J., 1994, Cascade Spring Cave (description and map), Central Oklahoma Grotto, Oklahoma City:Oklahoma Underground, v. 17, p. 27–35.
4. BOZEMAN, S., 1983, Pearl Cave (description and map), Central Oklahoma Grotto, Oklahoma City:Oklahoma Underground, v. 10, p. 13–20.
5. BOZEMAN, S., 1990, Hathaway Cave (description and map), Central Oklahoma Grotto, Oklahoma City:Oklahoma Underground, v. 16, p. 5–8.