Bell telephone.
The Gower/bell telephone.
Telephone exchange.
Ader-Bell telephone.
Telephone operator.
Telephone wires.
Swinton's telephone.
Antoine Breguet's mercury telephone.
New-fangled telephone.
Bell Telephone.
Laying telephone cables.
Ader's telephone.
FIRST TELEPHONE, 1875.
Bell's photo phone.
Alexander Graham Bell's photo phone.
Gower-bell telephone.
Great business asset.
Telephone headset.
Telephone service.
Metropolitan telephone.
Condenser telephone.
Switchboard telephone exchange.
Soundproofed telephone booth.
BELL'S TELEPHONE, c1920.
Reis's musical telephone.
Elisha's telephone.
Phelp's 'crown' telephone.
Elisha Gray's telephone.
Alexander Graham Bell.
Diagram of Bell's second telephone.
Paris telephone exchange.
New Year's greetings.
J. Philip Reis.
Philipp Reis.
Contact breaker.
Homacoustic speaking tube.
Switchboard operator.
Edison telephone.
Telephone and telegraph cables.
Telephone cables being spliced.
Telephone cables being laid.
Herz's telephone condenser.
Phelp's Duplex telephone.
Feeding telephone cable from drum.
Telephone apparatus.
TELEPHONE, 1876.
TELEPHONE CABLES, 1891.
Apparatus invented.
Electric telegraph reel.
Berliner's central communtator.
George du Maurier's.
Bell telephone, 19th century
Laying an electric telegraph cable.
Indo-European telegraph.
Landing the cable of the Falmouth Gibraltar and Mediterranean.
Frame and insulators on a Parisian rooftop.
George du Maurier's vision.
George du Maurier.
Hughes microphone.
Edison's phonometer.
Hughes' microphone.
Telegraph receiving station, artwork
Vibrating telephone.
Wall telephone.
The pan telephone.
Breguet's telephone.
TELEPHONE LINES, 1891.
Pillar and stand telephone.
TELEPHONE SWITCHBOARD.
Bell's Phonautograph.
Using a string telephone.
BELL TELEPHONE AD., 1895.
BELL TELEPHONE, 1884
BELL: TELEPHONE DEMO, 1877.
A message being received on a Morse printing telegraph.
Taking the cable on board the Elazer.
Sectional view of manhole in New York street.
Alarming invasion of privacy.
Boudet's microphone.
New-Year greetings.
Bert & d'Arsonval.
Siemens electric telegraph relay.
Telegraph sending station, artwork
Women operators.
ELECTRIC BELT AD.
Steam ship 'William Hutt'.
Laying the first submarine cable.
Magneto-eclectic telegraph.
Submarine telegraph cable.
Undo-European telegraph.
Landing the submarine telegraph cable.
The Great Eastern leaving.
Eclectic telegraph cable.
Shopping by videophone.
Opera performance.
Ader's Fanfare.
Victorian couple discussing tasks to be divided.
SAMUEL MORSE (1791-1872).
Electric telegraph station fitted with Breguet equipment.
TELEGRAPHY, 1873.
ELECTRIC AUTOMOBILE, 1897.
Clock mechanism, 19th century
Electrical invention, 19th century
Steinheil telegraph, 1837
Cooke-Wheatstone telegraph, 1837
Wheatstone and other telegraphs, 1839
Breguet telegraphy, 19th century
Electrical experiments, 19th century
String Telephone.
The First Electric Tram.
GYROSCOPES, 19th CENTURY.
19th Century electrostatic drum machine
Ayrton-Jones ampere balance
Ader telephone station, 19th century
TELEPHONE EXCHANGE, 1891.
NEW YORK: TELEPHONE, 1891.
SUBMARINE TELEPHONE CABLE.
CUP TELEPHONE, 1880.
TELEPHONE EXCHANGE SYSTEM.
ANGLO-FRENCH TELEPHONE.
Telephone-telegraph invention, artwork
Alexander Bell telephone.
TELEPHONE, 19th CENTURY.
A Bell telephone.
The first Bell telephone.
The Australian Overland Telegraph.
Telegraph relay for use with the Morse system.
MORSE TELEGRAPH.
Wheatstone's needle (pointer) telegraph.
The principle of the Morse telegraph.
Bell telephone laboratories.
TELEGRAPH INSULATORS.
The Submarine Electric Telegraph Station, On The Bosphorus
The Submarine Electric Telegraph
An instrument panel for pneumatic signalling system.
A proposed method of communicating with the planets.
The submarine electric telegraph cable.
A pneumatically operated perforating machine for Morse electric telegraphs.
Early electric telegraph receiver, 19th Century illustration
Foy-Breguet telegraph, 19th century
Bonelli telegraph, 19th century
Telegraph tape transmitter, 19th century
Stenotelegraph, 19th century
Baudot telegraph system, 19th century
Telegraph galvanometer, 19th century
Electromagnetic relays.
The right number.
Telegraphone.
Electromechanical machine, 18th century
Laying telegraph cable.
Impression of Elisha Gray.
Breguet and Roosevelt.
TELEGRAPHY, 1889.
ELECTRIC POWER STATION.
NEW YORK CITY, c1885.
VLADIMIR K. ZWORYKIN
Electrical discharge experiments
Electric circuit research, 19th century