Pump., patent, June 29, 1915; (https://texashistory.unt.edu/ark:/67531/metapth859951/m1/1/: accessed June 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Pump., patent, June 29, 1915; (https://texashistory.unt.edu/ark:/67531/metapth859951/m1/1/: accessed June 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .