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      Scientific American October 1925

      Making the Movie Film Give the Music Cues

      With This Invention the Orchestra Leader Need Never Look at the Screen

      • October 1, 1925

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      More in the October 1925 issue of Scientific American
      • Notes and Queries, October 1925
      • Super-Radio to Span the Atlantic
      • The World's Largest Leper Colony
      View Full Contents
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