Drawer., patent, December 29, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172899/m1/2/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Drawer., patent, December 29, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172899/m1/2/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .