Encyclopedia of period British era – Downton Abbey – ficklesorts

The Downton Abbey connection

The Books of Downton Abbey, The New Antiquarian

The Books of Downton Abbey, The New Antiquarian

What Downton Abbey doesn't tell you about the 1920s

The very serious looks of Downton Abbey.

Do people in England still act the way they do in Downton Abbey? That is to say proper and extremely well-mannered? - Quora

The Literary Pedigree of Downton Abbey - The Millions

Downton Abbey – an unhistorical historical drama

Downton Abbey' and History: A Look Back - The New York Times

How realistic is Downton Abbey?