Journal of the House of Representatives of the Second and Third Called Session of the Seventy-Second Legislature of the State of Texas, Supplement, legislative document, 1991; (https://texashistory.unt.edu/ark:/67531/metapth307702/m1/1/: accessed May 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .