Lubricant, patent, July 16, 1889; (https://texashistory.unt.edu/ark:/67531/metapth172104/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Lubricant, patent, July 16, 1889; (https://texashistory.unt.edu/ark:/67531/metapth172104/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .