Nut-Lock, patent, September 6, 1910; (https://texashistory.unt.edu/ark:/67531/metapth513605/m1/2/: accessed July 12, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Nut-Lock, patent, September 6, 1910; (https://texashistory.unt.edu/ark:/67531/metapth513605/m1/2/: accessed July 12, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .