Nut Lock, patent, May 10, 1904; (https://texashistory.unt.edu/ark:/67531/metapth509724/m1/1/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Nut Lock, patent, May 10, 1904; (https://texashistory.unt.edu/ark:/67531/metapth509724/m1/1/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .