I used to be surprised by this sort of story, but having once had the opportunity to have a look at the sort of rabbit warren some old buildings can hide, and consider also the brush-pole up the backside attitude that some management operates over its staff in public access buildings (so the staff will not be motivated to let anyone else have a wander), I no longer feel the flush of surprise when discoveries are made.
In fact, I probably roll my eyes towards heaven with a 'thank you' that someone didn't just hire a skip and grab some kids off the street to fill it - no questions asked.
Greenock Watt Library discovers literary 'treasure trove'
A literary treasure trove has been discovered in a hidden cupboard at a library in Inverclyde.
The rare book collection was discovered by archivist Neil Dickson at Greenock's Watt Library.
It includes a 1538 edition of letters by Roman philosopher Cicero and an 1827 illustrated edition of John Milton's Paradise Lost - one of only 50 copies.
Mr Dickson discovered the hidden cupboard behind an old plan chest while working his way through the archives at Watt Library.
He said: "I couldn't believe my eyes when I saw the cupboard which obviously hadn't been opened for twenty, thirty years or longer.
"I was absolutely stunned when I realised what was inside - I have never seen such a collection of books in one place and certainly not under these circumstances.
"I am sure the find will be of enormous interest."
As well as books dating back to the 1530s, the collection includes 17th and 18th century volumes on surgery, witchcraft and exploration.
The 1827 edition of Paradise Lost features illustrations designed and engraved by the artist John Martin.