textually.org: How the electric telegraph switched on the connected world: "In 1837 William Cooke and Charles Wheatstone patented their telegraph, starting a new era of instant, long-distance electrical communication that culminated in the internet, email, Facebook, Twitter ... Mark Brandon of the Open University spoke to John Liffen of London's Science Museum about this 20th Century Icon in a video interview in The Guardian.
Two hundred years ago, people had to wait days, weeks or even months for letters to arrive by horse and ship. The electric telegraph changed all that. In the space of a few years, anyone in a large town could send a message hundreds of miles in just a few minutes."
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