Texas Register, Volume 12, Number 56, Pages 2397-2451, July 24, 1987, periodical, July 24, 1987; (https://texashistory.unt.edu/ark:/67531/metapth243900/m1/3/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .