Improved Power-Apparatus for Vehicles, patent, August 17, 1869; (https://texashistory.unt.edu/ark:/67531/metapth165193/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Improved Power-Apparatus for Vehicles, patent, August 17, 1869; (https://texashistory.unt.edu/ark:/67531/metapth165193/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .