Each Everyman's Library book has a colored cloth binding denoting the period of the work: Scarlet - Contemporary Classics Navy - 20th Century Burgundy - Victorian Literature/19th Century Dark Green - Pre-Victorian/Romantic/18th Century Light Blue - 17th Century and Earlier Celadon Green - Non-Western Classics Mauve - Ancient Classics Sand - Poetry The above information relating to the colored cloth binding of Everyman's Library books is 100% resourced from Random House’s Everyman’s Library page, found immediately below:http://www.randomhouse.com/knopf/classics/about.htm