[Overseas switchboard at 32 Avenue of the Americas.]

[Telephone operators.]

[People observing telephone operators.]

Headquarter building of the American Telephone and Telegraph Company.

[Telephone operators.]

[Telephone operators.]

[Early types of switchboards.]

[Early types of switchboards, Old Spring Exchange.]

Communications, Telephone Exchange.

Telephone, New York Telephone Co. Exchanges.

Telephone, New York Telephone Co. Exchanges.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

American Telephone & Telegraph Company. President's Office

[New York City Telephone Exchange.]

The Metropolitan Telephone and Telegraph Co. List of Subscribers, September 1, 1894

American Telephone & Telegraph Company. President's Office

Communications, Telephone Exchange.

American Telephone & Telegraph Company. Vice President's Office