Fragments of a centuries-old manuscript from the time of the Emperor Charlemagne have been discovered sewn into some of Auckland Library's oldest books.
Staff noticed fragments of manuscript sewn into a late 15th century bible.
Further investigation uncovered more fragments in three of the Latin Bible's four volumes.
It was presented to the library in 1913 and originally belonged to monastery in southern Germany.
Heritage and Research Manager Sue Cooper says an English expert believes the fragments are from around AD 800 making them more than 1200 years old.