General and Special Laws of The State of Texas Passed By The Second, Third and Fourth Called Sessions of the Sixty-Second Legislature and the Regular Session of the Sixty-Third Legislature, legislative document, 1973; (https://texashistory.unt.edu/ark:/67531/metapth221792/m1/366/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .