Holding-Clip., patent, August 29, 1916; (https://texashistory.unt.edu/ark:/67531/metapth857844/m1/2/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Holding-Clip., patent, August 29, 1916; (https://texashistory.unt.edu/ark:/67531/metapth857844/m1/2/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .