Wrench, patent, January 4, 1916; (https://texashistory.unt.edu/ark:/67531/metapth858968/m1/1/: accessed June 30, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Wrench, patent, January 4, 1916; (https://texashistory.unt.edu/ark:/67531/metapth858968/m1/1/: accessed June 30, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .