An engraving depicting the Shutter Telegraph devised by Lord George Murray in 1795 and adopted by the Admiralty for swift long-range communication. Dated 19th century
An engraving depicting the Shutter Telegraph devised by Lord George Murray in 1795 and adopted by the Admiralty for swift long-range communication. Dated 19th century
Crédito:
Album / Universal Images Group / Universal History Archive