They were the youngest children to live in the White House in over a century -- Caroline just three and John Jr. a newborn when their father took the oath of office. They won the hearts of the American people as they romped around -- and under -- their father's desk in the Oval Office. And when, three years later, Caroline kissed JFK's coffin and John Jr. saluted the passing bier, they were forever etched in the nation's collective heart.In this book,...