Axle Box., patent, September 10, 1889; (https://texashistory.unt.edu/ark:/67531/metapth172153/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Axle Box., patent, September 10, 1889; (https://texashistory.unt.edu/ark:/67531/metapth172153/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .