Chained libraries

Did you know that the earliest example of a library to be endowed for use outside of a school or college still exists in St Wulfram's Church, Grantham.  I remember climbing the steps up to the room in the steeple when on a school visit in my early teens.  Reverend Francis Trigge gave £100 for book purchase in 1598 - 356 items are still there and 80 volumes are still attached.

Interestingly modern fiction still makes use of these:  Terry Pratchett's magical library at the Unseen University - the chains are in order to prevent the more vicious magical books from either escaping or attacking any unsuspecting students and Harry Potter's Hogwarts has a Restricted section.