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      Knowledge is Power

      Scientific American February 24, 1912

      Pittsburgh Trailers and Their Lessons

      Doubling the Seating Capacity for the Same Motive Power

      • By John P. Fox on February 24, 1912

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      More in the February 24, 1912 issue of Scientific American
      • A New Apparatus for Marine Exploration
      • Maintaining a Constant Level in Batteries
      • Simple Lifter for the Laboratory
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