Loading and Dumping Device., patent, May 2, 1911; (https://texashistory.unt.edu/ark:/67531/metapth508656/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Loading and Dumping Device., patent, May 2, 1911; (https://texashistory.unt.edu/ark:/67531/metapth508656/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .