Rail-Joint. Page: 3 of 3

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Free, Andrew. Rail-Joint., patent, October 10, 1911; [Washington D.C.]. (texashistory.unt.edu/ark:/67531/metapth512916/m1/3/: accessed October 18, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Government Documents Department.

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