Cotton Checker and Cultivator., patent, January 11, 1910; (https://texashistory.unt.edu/ark:/67531/metapth514171/m1/1/: accessed June 24, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Cotton Checker and Cultivator., patent, January 11, 1910; (https://texashistory.unt.edu/ark:/67531/metapth514171/m1/1/: accessed June 24, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .