Index of Landmarks and Vanished Communities
- Provides information on sites of interest including terrain features, populated places, schools, mills, rivers and streams, parks, and cemeteries. Also included in some listings are links to U.S. Geological Survey information.
- http://www.rootsweb.com/~txlndmrk/coryell.htm

Handbook of Texas Online: Coryell, James
- Biographical information concerning the county's namesake.
- http://www.tsha.utexas.edu/handbook/online/articles/CC/fco74.html

The Political Graveyard: Coryell County, Tex.
- Historical information on politicians that have lived or died in the area. Also includes recent population, land area, and links.
- http://www.politicalgraveyard.com/geo/TX/CR.html

Coryell County Archives
- Provides biographical sketches, census and tax lists, cemetery information, land deeds and grants, historical records, military records, obituaries, pensions, wills and vital records. Part of the TXGenWeb and USGenWeb Archives Project.
- http://www.rootsweb.com/~usgenweb/tx/coryell/corytoc.htm

National Register of Historical Places: Texas (TX), Coryell County
- Provides architectural, historical and functional data on listed points of interest.
- http://nationalregisterofhistoricplaces.com/TX/Coryell/state.html