Plow., patent, April 14, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172666/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Plow., patent, April 14, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172666/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .