Towing Device for Vehicles., patent, December 3, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1256693/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Towing Device for Vehicles., patent, December 3, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1256693/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .