Float-Valve, patent, March 29, 1910; (https://texashistory.unt.edu/ark:/67531/metapth510573/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Float-Valve, patent, March 29, 1910; (https://texashistory.unt.edu/ark:/67531/metapth510573/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .