Texas Register, Volume 12, Number 43, Pages 1851-1877, June 9, 1987, periodical, June 9, 1987; (https://texashistory.unt.edu/ark:/67531/metapth243887/m1/1/: accessed May 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .