The telegraph: Introduction

Here is the link. Enjoy!

http://youtu.be/IS3y4nHf8KM

By Meng yuan Guo

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Here is a video that introduces the needle telegraph. Enjoy!

http://youtu.be/XFl7T4aBZAA

By Meng yuan Guo

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Telegraph, Talk and Talkers

by Jessica

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The telegraph a history

by Tara