The owner of another fabulous volume, the Book of St Albans – a gentleman’s guide to heraldry, hawking and hunting that, in the 1480s, was the first colour printed book in English – did worse and with much less shame: he added a little drawing to the bottom of a page showing an enthusiastic couple having sex.
A new exhibition at the Cambridge University Library features some rare books that have had less-than-courteous owners. The Guardian has more details.