Wheel, patent, April 11, 1911; (https://texashistory.unt.edu/ark:/67531/metapth511469/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Wheel, patent, April 11, 1911; (https://texashistory.unt.edu/ark:/67531/metapth511469/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .