Hugh Hefner launched a new magazine for men in the 1950s, creating a hugely successful multimedia enterprise and making himself into a celebrity and mogul.
When Joan Ganz Cooney applied the persuasive powers of television to the profound needs of pre-school children, she created an educational enterprise that now reaches around the world.
How did Fred Smith overcome a challenging set of regulatory, logistical, and financial forces to create one of the most exciting and successful companies that has changed the way the world does business?