Hoe., patent, August 16, 1921; (https://texashistory.unt.edu/ark:/67531/metapth1258994/m1/1/: accessed July 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Hoe., patent, August 16, 1921; (https://texashistory.unt.edu/ark:/67531/metapth1258994/m1/1/: accessed July 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .