Texas. Legislature. House of Representatives. 79th Texas Legislature, Regular Session, House Bill 297, Chapter 41, legislative document, May 13, 2005; (https://texashistory.unt.edu/ark:/67531/metapth156938/m1/1/: accessed December 18, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .