Necktie-Tying Form., patent, April 15, 1919; (https://texashistory.unt.edu/ark:/67531/metapth1257309/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Necktie-Tying Form., patent, April 15, 1919; (https://texashistory.unt.edu/ark:/67531/metapth1257309/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .