1873
1875
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
Bell reveals his work on the harmonic telegraph to Hubbard and Sanders, who agree to fund his efforts
Bell and Watson start working together at Williams' shop
Edison develops the quadruplex (multiplexing) telegraph
Elisha Gray leaves Western Electric to pursue other inventions
Western Union rates range from four to 25 cents per word based on distance
