Which construction company build the tower which is connected by an elevated walkway with the Metropolitan Life North Building which is just north of it?
Metropolitan Life North Building: The Metropolitan Life North Building, now known as Eleven Madison, is a 30-story art deco skyscraper on Madison Square Park in Manhattan, New York City, at 11-25 Madison Avenue. Metropolitan Life Insurance Company Tower:  Designed by the architectural firm of Napoleon LeBrun & Sons and built by the Hedden Construction Company, the tower is modeled after the Campanile in Venice, Italy.
i don't know