October 24, 1861
- The first transcontinental telegraph line across the United States is completed.
- Western Union completes the final segment of the transcontinental telegraph from Denver to Sacramento.
- People of West Virginia vote overwhelmingly in favor of creating a new state.
A Chronological History of the Civil War in America1
- Western section of Pacific Telegraph Line connected with the eastern section of Great Salt Lake City, thus connecting the wires between the Atlantic and Pacific coasts.
- A Chronological History of the Civil War in America by Richard Swainson Fisher, New York, Johnson and Ward, 1863