Plow., patent, November 1, 1910; (https://texashistory.unt.edu/ark:/67531/metapth509874/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Plow., patent, November 1, 1910; (https://texashistory.unt.edu/ark:/67531/metapth509874/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .