Communications, Marconi, Wireless Telegraph Inc.

Communications, Marconi's Wireless Telegraphing Apparatus.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

Communications, Telephone Exchange.

Chief, and Assistant, Engineers, of the New York Fire Department, 1857 & 8

[Woman at a telegraph machine.]

[Morse telegraph recorder.]

[Teletypewriter switchboard.]

[Telegraph.]

[Morse recorder made by Samuel F. B. Morse.]

[Man at switchboard.]

[Close up of a teletypewriter switchboard.]

[Morse Relay machine.]

Communications, Telephone Exchange.

[Telegrams sent and received today.]

[General view of some of the dial equipment, Trafalgar Central Office.]

[Sender frames, dial equipment.]

Communications, Telephone Exchange.