Converting a London telephone exchange
Wall Art and Photo Gifts from Mary Evans Picture Library
Converting a London telephone exchange
Front cover photograph of the stupendous task of converting a London telephone exchange to the new Automatic Principle. Date: October 1926
Mary Evans Picture Library makes available wonderful images created for people to enjoy over the centuries
Media ID 14408188
© Illustrated London News Ltd/Mary Evans
Automatic Communication Engineers Exchange Holborn Principle Telephone Wires 1926
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