Nut-Lock., patent, September 18, 1917; (https://texashistory.unt.edu/ark:/67531/metapth854169/m1/1/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Nut-Lock., patent, September 18, 1917; (https://texashistory.unt.edu/ark:/67531/metapth854169/m1/1/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .