Well-Drilling Apparatus., patent, April 9, 1895; (https://texashistory.unt.edu/ark:/67531/metapth173957/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Well-Drilling Apparatus., patent, April 9, 1895; (https://texashistory.unt.edu/ark:/67531/metapth173957/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .