Wrench, patent, February 20, 1917; (https://texashistory.unt.edu/ark:/67531/metapth858926/m1/1/: accessed May 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Wrench, patent, February 20, 1917; (https://texashistory.unt.edu/ark:/67531/metapth858926/m1/1/: accessed May 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .