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The telephone system of the British post office. A practical handbook (1901)

Herbert, Thomas Ernest · London, New York, Whittaker and Co. · leaf 100

An illustration from The telephone system of the British post office. A practical handbook, 1901, leaf 100
Figure 72.

Telephone · Postal service

Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.

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