Cotton Chopper., patent, November 30, 1886; (https://texashistory.unt.edu/ark:/67531/metapth171408/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Cotton Chopper., patent, November 30, 1886; (https://texashistory.unt.edu/ark:/67531/metapth171408/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .