Axle-Box Lubricator, patent, November 1, 1910; (https://texashistory.unt.edu/ark:/67531/metapth514938/m1/1/: accessed April 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Axle-Box Lubricator, patent, November 1, 1910; (https://texashistory.unt.edu/ark:/67531/metapth514938/m1/1/: accessed April 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .