On This Day In Telephone History January 17TH 1876 Alexander Graham Bell moved his laboratory to a third floor room at 5 Exeter Place, Boston. He was still experimenting with the "gallows” type of telephone as well as other forms of magnetic transmitters and reed receivers.

On This Day In Telephone History January 17TH 1876

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On This Day In Telephone History January 17TH 1876 Alexander Graham Bell moved his laboratory to a third floor room at 5 Exeter Place, Boston. He was still experimenting with the “gallows” type of telephone as well as other forms of magnetic transmitters and reed receivers.