Texas Register, Volume 12, Number 93, Pages 4657-4712, December 15, 1987, periodical, December 15, 1987; (https://texashistory.unt.edu/ark:/67531/metapth243937/m1/1/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .