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      Knowledge is Power

      Scientific American September 11, 1886

      The "Quaker City" Grinding Mills for Corn and Cobs, Grain, Bones, Etc.

      • September 11, 1886

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      More in the September 11, 1886 issue of Scientific American
      • Engineering Inventions - September 11, 1886
      • Index of Inventions - September 11, 1886
      • Notes and Queries - September 11, 1886
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