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Ancient Secrets of Lost Messaging
Explore forgotten communication methods from history with this engaging crossword puzzle.
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Across
  • 1. System using flags or lights to convey messages at a distance
  • 3. Percussion instrument used for long-distance rhythmic messaging
  • 4. Early electrical system transmitting coded signals over wires
  • 5. Type of pigeon specially trained for message delivery
  • 7. Person who physically carried messages before modern mail
  • 9. Bird historically used to carry messages over long distances
Down
  • 2. Visual signaling method using puffs of dark air
  • 6. Method for encoding secret written messages
  • 8. Device using reflected sunlight to send signals

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