Singletree-hook and Trace-Securing Device., patent, August 27, 1901; (https://texashistory.unt.edu/ark:/67531/metapth510004/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Singletree-hook and Trace-Securing Device., patent, August 27, 1901; (https://texashistory.unt.edu/ark:/67531/metapth510004/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .