[Telephone operators.]
[People observing telephone operators.]
[Sender frames, dial equipment.]
[General view of some of the dial equipment, Trafalgar Central Office.]
[District selector frame in a dial exchange.]
[H.L. Horton & Co. Interior, stockboard.]
[Stockboard.]
[Early types of switchboards.]
[Early types of switchboards, Old Spring Exchange.]
Styles of Long Distance Instruments
72nd Street and Ridge Boulevard. Flagg Court Apartments. Interior, office, detail of renting unit board
Communications, Telephone Exchange.
Telephone, New York Telephone Co. Exchanges.
[Woman at a telegraph machine.]
