On This Day in Telephone History May 1, 1878, the First Telephone Exchange in Ohio. The City And Suburban Association of Northern Kentucky entered into agreement with the American Bell Company of Boston for inter-territorial telephone service becoming the first telephone exchange in Ohio.

On This Day in Telephone History May 1ST 1878

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The First Telephone Exchange in Ohio. The City And Suburban Association of Northern Kentucky entered into agreement with the American Bell Company of Boston for inter-territorial telephone service becoming the first telephone exchange in Ohio.

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