Plow., patent, September 30, 1902; (https://texashistory.unt.edu/ark:/67531/metapth508300/m1/2/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Plow., patent, September 30, 1902; (https://texashistory.unt.edu/ark:/67531/metapth508300/m1/2/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .