Speed-Regulating Means., patent, July 9, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1257231/m1/1/: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Speed-Regulating Means., patent, July 9, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1257231/m1/1/: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .