Improvement in Standards for Vehicles., patent, May 12, 1874; (https://texashistory.unt.edu/ark:/67531/metapth166959/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Improvement in Standards for Vehicles., patent, May 12, 1874; (https://texashistory.unt.edu/ark:/67531/metapth166959/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .