Locomotive Valve Gear., patent, December 8, 1885; (https://texashistory.unt.edu/ark:/67531/metapth171149/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Locomotive Valve Gear., patent, December 8, 1885; (https://texashistory.unt.edu/ark:/67531/metapth171149/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .