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  1. Telegraph | Invention, History, & Facts | Britannica

  2. Morse Code & Telegraph: Invention & Samuel Morse ‑ HISTORY

  3. Invention of the Telegraph | Articles and Essays - Library of Congress

  4. The History of the Invention of the Telegraph - ThoughtCo

  5. Electrical Telegraph - World History Encyclopedia

  6. Telegraphy - Wikipedia

  7. The Origins of the Telegraph - The Franklin Institute

  8. Who Invented The Telegraph? Revolutionizing Global …

  9. Invention of the Telegraph | Collection Highlights | Articles and ...

  10. Who Invented the Telegraph? - HowStuffWorks

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