On May 1, 1844 news of Henry Clay's nomination reached the Capitol by wire about an hour before the train that left with it. Three weeks later Samuel Morse sent What hath God wrought, breaking the link between a message's speed and its carrier's. The episode follows the government's test line, railroads, the Pony Express and the rise of Western Union and the Associated Press, then asks who owned the wire and the news.
Historians argue over how much of the dot-and-dash code was Vail's, and many people have documented claims to parts of the telegraph. Whether the Western Union and Associated Press alliance biased the news, as in the 1876 election, is an interpretation others dispute.