[Sender frames, dial equipment.]
[General view of some of the dial equipment, Trafalgar Central Office.]
[District selector frame in a dial exchange.]
[Close up of a teletypewriter switchboard.]
Central Park & General Views [Central Park]
[Woman at a telegraph machine.]
[Queensboro] Central Library. General office.
Bank of Manhattan Trust Co. General view of panels lighted.
Central Park & General View [Central Park]
Bank of Manhattan Trust Co. General view of north officer's room.
New Central Park Reservoir - General View [Croton System.]
Officer's apartments, Governors Island, N.Y. General view from dock.
RCA Building. Post Office, general view.
[Morse Relay machine.]
Coney Island, General Views [Dreamland Office].
[Telegraph.]