Rail-Joint, patent, October 26, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1258610/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Rail-Joint, patent, October 26, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1258610/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .