Journal-Lubricator., patent, May 19, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172696/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Journal-Lubricator., patent, May 19, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172696/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .