Texas Register, Volume 1, Number 37, Pages 1237-1276, May 11, 1976, periodical, May 11, 1976; (https://texashistory.unt.edu/ark:/67531/metapth252816/m1/20/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .