Hoisting-Hook, patent, October 1, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1257553/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Hoisting-Hook, patent, October 1, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1257553/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .