Amphibians and Reptiles in Callahan County
Texas Cooperative Wildlife Collection list of species found in the county.
Butterflies of Callahan County, Texas
Information about and pictures of all the known species of butterflies in the county.
Callahan City - Texas Ghost Town
Short profile of the town.
Callahan County QuickFacts from the US Census Bure
Population, demographic, and housing information from the 1990 census. Link to Tiger map of the county.
Handbook of Texas Online : Callahan County
Current and historical information about Callahan County.
The Political Graveyard: Callahan County
Lists politicians who lived or died in the county.
YBLost: Callahan County
Callahan County, Texas public record information.