In 1901, the Northern Pacific was an unlikely prize: a twice-bankrupt construction of the federal government, it was a two-bit railroad (literally--five years back, its stock traded for twenty-five cents a share). But it was also a key to connecting eastern markets through Chicago to the rising West. Two titans of American railroads set their sights on it: James J. Hill, head of the Great Northern and largest individual shareholder of the Northern Pacific, and Edward Harriman, head of the Union Pacific and the Southern Pacific. The subsequent contest was unprecedented in the history of...