Book excerpt: The indomitable city dwellers of Riverside Drive, New York, are back with more adventures and fun. Nora, her little brother, Teddy, her neighbor Russell and his little sister, Elisa, wouldn't want to live anywhere else than in their wonderful apartment building. This irrepressible bunch will show urban as well as suburban kids what being a good neighbor is really all about Nora has made friends with all the people in her building -- almost. Cranky Mrs. Ellsworth, whom Nora has nicknamed Mrs. Mind-Your-Own-Business, just won't be friendly. Will Mrs. Mind-Your-Own-Business ever become their friend at last?