Improvement in Car-Couplings., patent, May 30, 1876; (https://texashistory.unt.edu/ark:/67531/metapth166551/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Improvement in Car-Couplings., patent, May 30, 1876; (https://texashistory.unt.edu/ark:/67531/metapth166551/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .