Amphibians and Reptiles in Erath County: Texas Cooperative Wildlife Collection list of species found in the county.
Butterflies of Erath County, Texas: Information about and pictures of all the known species of butterflies in the county.
Erath County Appraisal District: Interactive site which allows searches of property tax records.
Handbook of Texas Online: Current and historical information about Erath County.
YB Lost - Erath County, Texas: Provides names and addresses of county public officials and departments.