Coupling For Well-Drilling Tools., patent, October 3, 1899; (https://texashistory.unt.edu/ark:/67531/metapth511653/m1/1/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Coupling For Well-Drilling Tools., patent, October 3, 1899; (https://texashistory.unt.edu/ark:/67531/metapth511653/m1/1/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .