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      Scientific American January 24, 1920

      Blazing Wisconsin Ways, Hydro Power for the Canadian Farmer and more

      • By Avis Gordon Vestal on January 24, 1920

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      More in the January 24, 1920 issue of Scientific American
      • The New York State Barge Canal--III
      • The Romance of Invention--VII
      • Correspondence - January 24, 1920
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