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The British military expedition against the Bruges-Ostend canal, 1798: Joseph Jekyll M.P provides two different reports on it by telegraph, using rolled-up newspapers as telescopes. Coloured etching by J. Gillray, 1798.

Telegram sent by G. Marconi in Wimereux to Édouard Branly in Paris, acknowledging Branly's work in developing the electric telegraph across the Channel. Photograph, ca. 1899.

Magnetism: electrical equipment and magnetic phenomena. Coloured engraving by J. Emslie, 1850.

Submarine telegraphy and the hunt for gutta percha : challenge and opportunity in a global trade / by Helen Godfrey.

The Cliffs at Porthcurnew Bay, Cornwall. 

Landing the Cable at Porthcurnew Bay. 

History, theory, and practice of the electric telegraph / By George B. Prescott.

Making the Steel Wires for the Atlantic Telegraph Cable of 1865.

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Submarine telegraphy and the hunt for gutta percha : challenge and opportunity in a global trade / by Helen Godfrey.

The Cliffs at Porthcurnew Bay, Cornwall.

Landing the Cable at Porthcurnew Bay.

History, theory, and practice of the electric telegraph / By George B. Prescott.

Making the Steel Wires for the Atlantic Telegraph Cable of 1865.