Statutes currently in force are in the Texas Codes Annotated or the Texas Revised Civil Statutes Annotated. Texas is in the process of reorganizing its statutes, which is why there are two organizational schemes. There is a single general index to the Texas statutes. The Texas statutes are commonly called Vernon's (because Vernon used to publish them and the name is still on the spine).
Statutes and codes- subject arrangement of current laws kept up to date as the Legislature makes changes to the law.
A range of different publishers also offer a selected number of Texas annotated codes on discrete subjects (e.g., family law). O'Connor's produces one popular series of Texas annotated codes; the most recent two editions are available on Reserve.
A related title is Vernon's Texas Rules of Civil Procedure, which is shelved separately (spine title is Vernon's Texas Rules Annotated). It contains district and county courts rules, courts of appeals rules, Supreme Court rules, justice courts rules, and special proceedings. It also includes Rules of Evidence and Rules of Appellate Procedure. There is also the updated title: Local Rules of the District Courts in Texas.
The subject-matter arrangement of the laws is actually the last step in the legislative process. Before being included in Vernon's, the laws are published in an arrangement that is chronological, as they were passed by the legislature.