Government
Jack Central Appraisal District, Jack County - Jacksboro, Texas, Jack County QuickFacts from the US Census Bureau, The Political Graveyard
Amphibians and Reptiles
Texas Cooperative Wildlife Collection list of species found in the county.
Butterflies of Jack County
Information about and pictures of all the known species in the county.
Handbook of Texas Online - Jack County
Current and historical information about Jack County.