American Mirror: The Life and Art of Norman Rockwell By Deborah Solomon - Norman Rockwell, as much as Walt Disney or Ronald Reagan, provided America with a mirror of its dreams and aspirations. As the star illustrator for The Saturday Evening Post for nearly half a century, Rockwell portrayed a fantasy of civic togetherness, of American decency and good cheer. Or, as Deborah Solomon writes in her authoritative new biography, he painted a history of the American people that had never…