Box-Car-Door Fastener, patent, March 19, 1912; (https://texashistory.unt.edu/ark:/67531/metapth513781/m1/1/: accessed May 30, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Box-Car-Door Fastener, patent, March 19, 1912; (https://texashistory.unt.edu/ark:/67531/metapth513781/m1/1/: accessed May 30, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .