Power-Driven-Implement Frame, patent, January 13, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1257050/m1/5/: accessed July 13, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Power-Driven-Implement Frame, patent, January 13, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1257050/m1/5/: accessed July 13, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .