Advertising: To the Top at Last

Marion Harper's fierce ambition and celebrated metabolism have made him a living legend on Madison Avenue. He begins each day bent over a stationary bicycle in his $150,000 Westchester County home, pedaling up to four miles while he also races through a book propped on the handle bars. As chairman of Manhattan's Interpublic Inc., a corporate maze of advertising and related agencies, he has often worked 24 hours straight, taken a shower and a nap, then popped into a client meeting exuding a Florida glow; he has personally won such accounts as...

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