Machine-Brake., patent, July 25, 1911; (https://texashistory.unt.edu/ark:/67531/metapth511534/m1/3/: accessed July 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Machine-Brake., patent, July 25, 1911; (https://texashistory.unt.edu/ark:/67531/metapth511534/m1/3/: accessed July 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .