Beet Harvestor, patent, July 15, 1919; (https://texashistory.unt.edu/ark:/67531/metapth1259059/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Beet Harvestor, patent, July 15, 1919; (https://texashistory.unt.edu/ark:/67531/metapth1259059/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .