With huge thanks to Derek Rice, Library & Archives Co-Ordinator for a fascinating visit behind the scenes. 

We were shown around the archives and store room.  Temperature controlled with tight security arrangements and flood protection in place.  Large moveable storage shelves and cupboards house the many treasures.  We were shown prints and documents relating to the Millbank Penitentiary on the present gallery site. Next we entered the library to see documents, books and computer displays about the Thames and its history, part of a special project that changes monthly called Show and Tell.  Finally Derek took us to view the Nash exhibition.  A fascinating visit.  

One of the many in the collection, here is a photograph of the gallery at the time of the 1928 Thames Flood.