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Hassell, Frank J. & Cunningham, Roy S.Bread-Cutter,
patent,
November 12, 1907;
[Washington D.C.].
(https://texashistory.unt.edu/ark:/67531/metapth511910/:
accessed July 10, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.;
crediting UNT Libraries Government Documents Department.