Birthday Encyclopedia & Compatibility Encyclopedia Set of 2 books The birthday book comes with a supplementary chart. They have a slight used feel, but are in generally good condition with no major issues. There are no markings or writing. Individual sales are not possible. Bulk purchases are welcome! If there are any issues with the products, please contact me and I will handle it until the end. (e.g., non-delivery, different from the description or images, missing a book) Please refer to my profile for information about the seller, shipping, returns, and refunds.