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      Knowledge is Power

      Scientific American June 28, 1851

      Improved Machine for Punching Leather Hose, Harness, & c

      • June 28, 1851

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      More in the June 28, 1851 issue of Scientific American
      • Improved Railroad Brake
      • Electro-Magnetism as a Moving Power
      • A New Remedy for the Scurvy
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