Many books were printed and bound in the 16th and 17th centuries. Bookbinders used parchment to strengthen their book bindings; that material was expensive and therefore people often chose to cut up old, medieval manuscripts. This often involved manuscripts that had lost their value: books that were too Catholic or were written in a language that could no longer be read.Something very special was found in a number of book bindings in the Alkmaar Regional Archive: 21 fragments of a manuscript from the 11th century, an almost 1,000-year-old Latin psalter with Old English glosses. Thijs Porck, senior university lecturer of...