Hog-Yoke., patent, November 8, 1910; (https://texashistory.unt.edu/ark:/67531/metapth512801/m1/1/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Hog-Yoke., patent, November 8, 1910; (https://texashistory.unt.edu/ark:/67531/metapth512801/m1/1/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .