This is a set of four Mother's Guides for the Disney English System. There are no writings or major stains inside, and I think there are no problems with reading them. The Mother's Guides are now out of print and are rare books. They contain information on how to proceed with lessons and how parents should speak to their children. The learning content at the time is almost the same as it is now, so they are still useful books to have. They are books that are reassuring to have. Please understand that these are used items.