Governor, patent, May 21, 1907; (https://texashistory.unt.edu/ark:/67531/metapth508694/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Governor, patent, May 21, 1907; (https://texashistory.unt.edu/ark:/67531/metapth508694/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .