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| Picture No | 10216052 |
| Date | 1906 |
| Description | Automatic telephone-girls: Operators replaced by machines |
| Details |
A diagram of the mechanical telephone exchange, showing what happens once the number is dialled to when the call is received.
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| Source | Illustration by A. Hugh Fisher in 'The Illustrated London News', 10 February 1906, page 201 |
| Credit | © Illustrated London News Ltd/Mary Evans |
| Restrictions |
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