Texas. Game and Fish Commission. Information and Education Branch. Texas Game and Fish, Volume 19, Number 9, September 1961, periodical, September 1961; (https://texashistory.unt.edu/ark:/67531/metapth1588413/m1/1/: accessed July 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .