Balanced Pump., patent, April 20, 1886; (https://texashistory.unt.edu/ark:/67531/metapth171238/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Balanced Pump., patent, April 20, 1886; (https://texashistory.unt.edu/ark:/67531/metapth171238/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .