Heritage Open Day: Routes and networks through the collections of Norwich Cathedral Library, beginning with the oldest book in the collection, printed in 1474. From the starting point of our oldest printed book - 'Divine institutes', by Lactantius - we will open a few of the many routes through the collections including incunabula (books printed before 1501), other editions of the same work, different books owned by the same person. Come and investigate the library, and learn more of what it holds at this drop-in event.