I own this Disney’s encyclopaedia set about 10 years. It suitable for children 6-18 years old. It contains 25 volumes of various topics, 4 simple children words learning book, 1 children dictionary book and 1 children short stories book. You can pm me for more contents of the book. All the books are hard cover and in good conditions. There are some pages have yellow dot due to it old ages. There are complete total 31 books in this collection.