Cultivator-Plow., patent, March 18, 1902; (https://texashistory.unt.edu/ark:/67531/metapth511741/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Cultivator-Plow., patent, March 18, 1902; (https://texashistory.unt.edu/ark:/67531/metapth511741/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .