Improvement in Plows Page: 1 of 2
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Improvement in Plows, patent, July 6, 1869; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth165188/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.