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      Knowledge is Power

      Scientific American August 24, 1918

      The Mammoth and Great Onyx Caves

      Unpublished Features of Kentucky's Great Natural Curiosity

      • By Le Roy Jeffers on August 24, 1918

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      More in the August 24, 1918 issue of Scientific American
      • A Plea for Intensification of Management
      • The U-Boat off our Coasts, The Enemy In Our Midst, and more
      • Inventions New and Interesting- August 24, 1918
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