Werner von Siemens founds Siemens & Halske, designs pointing telegraph
Werner von Siemens founds Siemens & Halske, designs pointing telegraph
Western Union carries nine million messages and launches money orders
Western Union carries nine million messages and launches money orders
Edison telegraph stock ticker printer launches
Edison telegraph stock ticker printer launches
Meucci files caveat for talking telegraph
Meucci files caveat for talking telegraph
Western Union deploys the Stearns Duplex Telegraph
Western Union deploys the Stearns Duplex Telegraph
Western Union contracts with Thomas Edison and Elisha Gray to solve telegraph multiplexing
Western Union contracts with Thomas Edison and Elisha Gray to solve telegraph multiplexing
Elisha Gray demonstrates his 'harmonic telegraph' to Western Union
Elisha Gray demonstrates his 'harmonic telegraph' to Western Union
Western Union's Orton testifies in Congress against Hubbard's proposed telegraph competitor
Western Union's Orton testifies in Congress against Hubbard's proposed telegraph competitor
While vacationing in Canada, Bell conceives how speech could be sent over telegraph wires
While vacationing in Canada, Bell conceives how speech could be sent over telegraph wires
Bell reveals his work on the harmonic telegraph to Hubbard and Sanders, who agree to fund his efforts
Bell reveals his work on the harmonic telegraph to Hubbard and Sanders, who agree to fund his efforts
Edison develops the quadruplex (multiplexing) telegraph
Edison develops the quadruplex (multiplexing) telegraph
Bell pitches his harmonic telegraph to Western Union's Orton, who declines
Bell pitches his harmonic telegraph to Western Union's Orton, who declines
Orton engages Thomas Edison to investigate harmonic telegraphy for Western Union
Orton engages Thomas Edison to investigate harmonic telegraphy for Western Union
Phelps' "Electro-Motor Printing Telegraph" enables 60 WPM speed
Phelps' "Electro-Motor Printing Telegraph" enables 60 WPM speed
Western Union carries 29 million telegraph messages per year
Western Union carries 29 million telegraph messages per year
PDF:
Western Electric 1882 Telegraph catalog
PDF: Western Electric 1882 Telegraph catalog
Western Union carries 55 million telegraph messages per year
Western Union carries 55 million telegraph messages per year
Photo: Western Union telegraph operator
Photo: Western Union telegraph operator
