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      Knowledge is Power

      Scientific American October 04, 1919

      Red Rock Canyon

      One of California's Unvisited Splendors to be Made Accessible by the Roosevelt Highway

      • By John L. Von Blon on October 4, 1919

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      More in the October 04, 1919 issue of Scientific American
      • The World's Horned Heads
      • Correspondence - October 4, 1919
      • What Walking Comes to, Pacific Ocean Water in Domestic use and more
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