Texas Register, Volume 2, Number 27, Pages 1217-1260, April 5, 1977, periodical, April 5, 1977; (https://texashistory.unt.edu/ark:/67531/metapth252934/m1/1/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .