Cultivator, patent, February 27, 1917; (https://texashistory.unt.edu/ark:/67531/metapth858518/m1/1/: accessed June 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Cultivator, patent, February 27, 1917; (https://texashistory.unt.edu/ark:/67531/metapth858518/m1/1/: accessed June 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .