This booklet presents the Texas State Library Systems Act and some supporting documents to help in the operation of a library under the Texas system. The State Library Systems Act establishes and defines the state library system, allowing for its operation and management and defining the member libraries. Information on state grants is provided, along with rules for the administration of state program grants. Portions of the Texas State Code related to the State Library and Archives Commission are presented, including standards for the accreditation of a resource system and public libraries. A "Summary of Criteria for Membership in the Texas State Library System" defines the requirements for libraries of different sizes. A chart lists requirements for certification as a county librarian. (SLD)