Padlock., patent, September 6, 1892; (https://texashistory.unt.edu/ark:/67531/metapth173164/m1/2/: accessed June 27, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Padlock., patent, September 6, 1892; (https://texashistory.unt.edu/ark:/67531/metapth173164/m1/2/: accessed June 27, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .