Gammel, Hans Peter Mareus Neilsen. The Laws of Texas, 1923-1925 [Volume 22], book, 1925; (https://texashistory.unt.edu/ark:/67531/metapth15500/m1/24/: accessed June 18, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .