The Telephone and Telephone Exchanges: Their Invention and Development by John E. Kingsbury

The Telephone and Telephone Exchanges: Their Invention and Development

John E. Kingsbury
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This history of a commonplace but largely ignored technological innovation-the telephone exchange-shows how the exchange was instrumental in the growth of new cities and towns, and how it helped tie the nation together.

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The Telephone and Telephone Exchanges: Their Invention and Development

55.54
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