Wires Across the Continent in 1861
In the autumn of 1861, a message flashed across the United States from the Pacific coast to the East. It traveled along a single wire strung over plains, deserts, and mountains. The wire had just joined two lines, one that began in the east and one that began in the west, and it let people on opposite sides of the country talk within minutes.
Before then, news from California took days or even weeks to reach the East. Letters went by ship or by stagecoach, and the fastest riders of the Pony Express needed about ten days to carry a message across the middle of the country. Business owners, newspaper editors, and families all had to wait.
The telegraph worked by sending electric pulses along a wire. Operators tapped out messages in Morse code, a system of short and long signals called dots and dashes. At the far end, another operator listened to the clicks and wrote down the words.
Building the line was hard work. Crews started from both ends, setting up poles, stringing wire, and hauling supplies across empty land. They met in Salt Lake City in October of 1861. Soon afterward, the Pony Express shut down, because a wire could carry news faster than any horse.