Cattle-Guard., patent, August 31, 1909; (https://texashistory.unt.edu/ark:/67531/metapth508843/m1/1/: accessed July 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Cattle-Guard., patent, August 31, 1909; (https://texashistory.unt.edu/ark:/67531/metapth508843/m1/1/: accessed July 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .