Success! Took several hours of search but I managed to find the book out. It’s been 2 years since I last stood in that Age, thankfully it wasn’t raining, skies had brightened up but the place was flooded out, Nexus book had been destroyed by the rain so I shall have to replace that.
Will need to build up some shelter for the book, raise it up to keep it out of the water too, shall have to work out how much wood I’ll need for walkways and such.