[Early types of switchboards, Old Spring Exchange.]
[Early types of switchboards.]
[Radio transmitting station--Western Electric Company.]
[Broadcasting studio at Western Electric Company, 463 West Street.]
[New York Fire Department Water Tower.]
[S. S. Normandie at the time of her arrival in New York Harbor.]
[Fire engine.]
[Broadway, north from Cortland Street.]
[Harding speaks at Tomb of unknown soldier.]
[General view of sender frames in a panel dial central office.]
[Morse Relay machine.]
Wireless Telegraphing--N.Y. Cruiser--Mast 150 Ft. High--Where Messages Are Sent to B.S. Mass.
Marconi, Wireless Telegraphing Apparatus.
Marconi, Wireless Telegraph Inc.
Communications, Marconi's Wireless Telegraphing Apparatus.
[General view of some of the dial equipment, Trafalgar Central Office.]
[Sender frames, dial equipment.]
Headquarter building of the American Telephone and Telegraph Company.
[People observing telephone operators.]