""Ruby and Pearl or The Children at Castle Aylmer: A Story for Little Girls"" is a children's book written by Emma Marshall and first published in 1880. The book tells the story of two sisters, Ruby and Pearl, who live in a castle called Aylmer with their parents. The girls are kind and adventurous, and they often explore the castle's many rooms and secret passages.One day, the girls discover a hidden room in the castle and find an old diary belonging...