Anne Cox Chambers (U.S.) $10 billion

90. Divorced, 3 children

Daughter of Cox Enterprises founder James M. Cox (d. 1957), who finished high school at 17 and worked as a schoolteacher and newspaper reporter before shelling out $26,000 for the Dayton Evening News in 1898. James Sr. later moved into politics. Today Cox Enterprises includes Cox Communications cable company, 17 daily newspapers, 15 TV stations, 86 radio stations, Manheim auctions (cars) and AutoTrader.com. Revenues: $15 billion.