Amphibians and Reptiles in Duval County
Texas Cooperative Wildlife Collection list of species found in the county.
Butterflies of Duval County, Texas
Information about and pictures of all the known species of butterflies in the county.
Duval County QuickFacts from the US Census Bureau
Population, demographic, and housing information from the 1990 census. Link to Tiger map of the county.
Handbook of Texas Online : Duval County
Current and historical information about Duval County.
YB Lost - Duval County, Texas
Provides names and addresses of county public officials and departments.