YOU COULD HAVE your fill of naughty fantasies in Las Vegas in the 1950s, but southern Nevada was a long way from anywhere. A copy of Playboy, however, was available on newsstands everywhere and cost only fifty cents. At the moment when Vegas was becoming the branded hub of American bacchanalianism and construction was about to begin on Disneyland, Playboy was created by an American, Chicago born, the twenty-seven-year-old advertising copywriter Hugh Hefner.