Tex. Loc. Gov't Code § 318.002

The commissioners court of a county may appoint a county historical commission for the purpose of initiating and conducting programs suggested by the commissioners court and the Texas Historical Commission for the preservation of the county's historic cultural resources. Programs suggested by the Texas Historical Commission must be consistent with the statewide preservation plan. In suggesting programs, the Texas Historical Commission shall consider the fiscal and human resources the county has to conduct the programs.