Two books: "A World That Doesn't Matter" Two books: "To Save the World Someday" Total: 4 books I purchased these new and read them once, then stored them in a box. They are in good condition without any yellowing, but please understand that they have been in someone else's possession. Please check the photos and purchase with your understanding. No returns are accepted to prevent any trouble. I do not have any pets, and I do not smoke. Thank you for looking.