Carr, J.E., and Bergman, D.L., 1976, Reconnaissance of the water resources of the Clinton Quadrangle, west-central Oklahoma: Oklahoma Geological Survey Hydrologic Atlas 5, 1:250,000. Davis, L.V., 1955, Geology and ground-water resources of Grady and northern Stephens Counties, Oklahoma: Oklahoma Geological Survey Bulletin 73, 184 p. Donovan, R.N., and Ditzell, Curtis, 1986, Stop 3:-Geologic highlights at Zodletone (‘Stinking Mountain’), in Donovan, R.N. (ed.), The Slick Hills of Southwestern Oklahoma:-Fragments of an Aulacogen?: Oklahoma Geological Survey Guidebook 24, p. 96-99. Howery, S.D., 1960, Areal geology of northeastern Caddo County, Oklahoma: Norman, University of Oklahoma, masters thesis, 78 p. Fay, R.O., and Hart, D.L. Jr., 1978, Geology and mineral resources (exclusive of petroleum) of Custer County, Oklahoma: Oklahoma Geological Survey Bulletin 114, 88 p., 3 pls. O’Brien, B.E., 1963, Geology of east-central Caddo County, Oklahoma: Norman, University of Oklahoma, masters thesis, 72 p. Tanaka, H.H., and Davis, L.V., 1963, Ground-water resources of the Rush Springs Sandstone in the Caddo County area, Oklahoma: Oklahoma Geological Survey Circular, 61, 63 p., 1 pl. in pocket. Trapnell, D.E., 1961, Areal geology of southwestern Canadian County, Oklahoma: Norman, University of Oklahoma, masters thesis, 63 p. The geologists’ field maps were then digitized using a Summagraphics Microgrid III digitizing tablet with ESRI ArcView GIS 3.2. Each quadrangle was digitized separately with each geologic formation as a separate shapefile or layer. All 32 quadrangles are then assembled together using ESRI ArcView GIS 3.2 and ESRI ArcGIS ArcInfo 8.3. The assemblage was then overlain by a U.S. Geological Survey 1:100,000-scale topographic base map of the Alva quadrangle. The digitized map was checked at a scale of 1:40,000 for errors and accuracy. After all errors had been corrected and evaluated, the proper colors, labels, and symbols were applied for final layout at 1:100,000 scale in ArcGIS ArcInfo 8.3. Additional text and information was added around the exterior of the initial map by importing Corel Draw 11 objects. The final map was then converted to raster at 600 dots per inch in the form of a Portable Document Format (PDF) using Adobe Acrobat 6.0. In no event shall the OGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geologic data or arising out of the delivery, installation, operation, or support by OGS. This digital geologic map of the Anadarko 30 X 60 quadrangle, Caddo, Canadian, Custer, Grady, Kiowa, and Washita Counties, Oklahoma, is not meant to be used or displayed at any scale larger than 1:100,000. Source.