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      Scientific American September 15, 1906

      Preliminary Notes on the Archæology of the Yakima Valley, Washington

      • By Harlan I. Smith on September 15, 1906

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      More in the September 15, 1906 issue of Scientific American
      • Engineering Notes
      • Reversing Shaft Governor Engines
      • Fundamental Principles of Gas Engines and Gas Producers
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