Improvement in Tool-Holders for Grinding Page: 1 of 3
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Improvement in Tool-Holders for Grinding, patent, May 2, 1876; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth166543/m1/1/: accessed June 30, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.