The National Trust Guide to Late Medieval and Renaissance Britain: From the Black Death to the Civil War, by Colin Platt, published in 1986.
I had made note of this book in my local library a couple of years ago and after looking at it carefully yesterday I have already contacted my local second-hand bookstores to look for a copy. It is full of all sorts of different buildings with some great pictures. You could flip it open to virtually any page and be inspired to build what you see or use some detail in your next MOC.
