They are American Titans: Rockefeller, Carnegie, Ford, Edison, Stanford. Their names live down through the ages, emblazoned on foundations, museums, universities, galleries, banks and the richest of American real estate. Their ferocious drive, innovation and often sheer recklessness took these titans to the top of the rich and powerful list. They are the founding fathers of the Fortune 500, steering America through the Industrial Revolution into the Gilded Age.