Type-Writing Machine., patent, February 17, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172612/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Type-Writing Machine., patent, February 17, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172612/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .