This history of Westchester County, New York, from the time of European settlement to the present, examines four centuries of development in an iconic region that became the archetypal American suburb. Drawing on a wide range of primary sources, the author uncovers a complex and often surprising narrative of slavery, anti–Semitism, immigration, Jim Crow, silent film stars, suffragettes, gangland violence, political riots, eccentric millionaires, industry and aviation, man-made disasters and assassinations.