Automatic Railway-Gate., patent, August 14, 1894; (https://texashistory.unt.edu/ark:/67531/metapth173786/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Automatic Railway-Gate., patent, August 14, 1894; (https://texashistory.unt.edu/ark:/67531/metapth173786/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .