Staple-Setter., patent, June 15, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1256730/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Staple-Setter., patent, June 15, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1256730/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .