These art books are great for art lovers to explore Italian masterpieces and German expressionist paintings. When using them, handle gently to avoid further damage to the bindings and covers. Keep them in a dry and cool place to prevent more yellowing of the pages. If you want to clean the covers, use a soft, dry cloth to gently wipe the soiled areas. Be careful not to rub too hard on the foxed areas of 'German Expressionist Paintings' to avoid damaging the covers. When reading, support the spine to prevent the pages from falling out as the bindings are loosening.