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      Knowledge is Power

      Scientific American October 23, 1909

      A Practical Telephone

      Suggestions for the use of a Home-Made Telephone

      • By Fred W. Lane on October 23, 1909

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      More in the October 23, 1909 issue of Scientific American
      • Crystal Architecture
      • Letters Registered more than Two Thousand Years Ago
      • The True Function of Birds
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