Improvement in Sewing-Machines.
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Improvement in Sewing-Machines., patent, November 15, 1859; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth165089/: accessed March 6, 2026), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.
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