This new edition, revised with the assistance of Elizabeth Walsh of the Folger Shakespeare Library, incorporates enhanced illustrations of all the original 700 watermark photographs, and adds more than 320 new watermarks found by Mr. Gravell during the past twenty years. In all, 1,057 watermarks have now been computer enhanced and tripled-indexed for better identification. This new corpus of research includes revised and updated paper-mill histories, an updated bibliography, a new glossary of papermaking, and new name, geographic, and iconographic indexes. A new foreword by Keith Arbour recounts Thomas Gravell's contributions to paper history.