Pump-Operating Element for Wind-Wheels., patent, March 28, 1916; (https://texashistory.unt.edu/ark:/67531/metapth858319/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Pump-Operating Element for Wind-Wheels., patent, March 28, 1916; (https://texashistory.unt.edu/ark:/67531/metapth858319/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .