contemplativeWhen I was a child my parents gave me The Oldhams Encyclopaedia for Children (1970) ... and I almost wore it out. I still have the book - and still adore reading it. Great basic facts on all sorts of things - but for some things, it is now a great book full of memories.
I have numerous anatomy books, of course - and loads of books on TV programmes, films etc .... but ultimately my non fiction book I am going to mention is - Before Endevours Fade. As I have mentioned in the past, I enjoy visiting War Cemetaries - and this is the definative guide for Northern France and Belgium, from the First World War. A brilliant guide, whether you are planning a trip, or not.