The Regional Archive Alkmaar announced the discovery of parchment fragments in several 17th-century bookbindings, believed to have originated from an 11th-century book, possibly once owned by an English princess. These findings were made public on Thursday by the Regional Archive Alkmaar. During the 16th and 17th centuries, many books were printed and bound, and bookbinders commonly used parchment made from animal skin to strengthen bindings. They often repurposed old medieval books written on parchment to save costs.