Railroad Crossing Page: 2 of 4
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Railroad Crossing, patent, November 13, 1906; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth509317/m1/2/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.