» Center for Spatial Analysis    Specializing in the study and application of geospatial science and technology. Includes information about research and development, data, products and tools.    http://www.csa.ou.edu/

» Counties and Regions    Map displaying counties and regions as used in the Oklahoma category of the Open Directory Project.    http://member.newsguy.com/~sanford/okregion.html

» Oklahoma County Courthouses    Photographs and locations of many county courthouses throughout the state, as well as population and other information.    http://www.barnfield.net/oklahoma/

» Oklahoma Maps    The Perry-Castañeda Library Map Collection.    http://www.lib.utexas.edu/maps/oklahoma.html