Texas Register, Volume 12, Number 57, Pages 2453-2487, July 28, 1987, periodical, July 28, 1987; (https://texashistory.unt.edu/ark:/67531/metapth243901/m1/14/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .