I have in my hand, a book that just screams out to me that I do a Masters Degree in History.

Domesday Book: A Complete Translation.

It is way more than just a Census done in 1086-7.

From the Introduction:

Domesday Book is unique. A survey of England made in 1086-7. It is unmatched in its age, its scope and the consistent detail of its contents. It has been in official custody ever since it was made, and is celebrated now as the first of the public records and an endlessly rich source of historical materiel.