William Blake was as technically unconventional as he was in subject-matter and everything else, pioneering a relief etching process that was later to become the dominant technique of commercial illustration for a time. Many of his prints are pages for his books, with text and image on the same plate, as in the 15th century block-books. The Romantic Movement saw a revival in original printmaking in several countries, with Germany taking a large part once again; many of the Nazarene movement were printmakers. In England, John Sell Cotman etched many landscapes and buildings in an effective, straightforward style. J. M. W. Turner produced several print series including one, the "Liber Studiorum", which consisted of seventy-one etchings with mezzotint that were influential on landscape artists; according to Linda Hults, this series of prints amounts to "Turner's manual of landscape types, and ... a statement of his philosophy of landscape." With the relatively few etchings of Delacroix the period of the old master print can be said to come to an end.