Well-Drilling Register, patent, December 14, 1915; (https://texashistory.unt.edu/ark:/67531/metapth859905/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Well-Drilling Register, patent, December 14, 1915; (https://texashistory.unt.edu/ark:/67531/metapth859905/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .