Pump or Motor, patent, October 25, 1921; (https://texashistory.unt.edu/ark:/67531/metapth1258873/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Pump or Motor, patent, October 25, 1921; (https://texashistory.unt.edu/ark:/67531/metapth1258873/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .