Four Wheel Drive Mechanism, patent, February 25, 1919; (https://texashistory.unt.edu/ark:/67531/metapth1257425/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Four Wheel Drive Mechanism, patent, February 25, 1919; (https://texashistory.unt.edu/ark:/67531/metapth1257425/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .