N.F.L. to Add London Games at Twickenham Stadium - The New York Times
Thirteen Years In, NFL's Popularity Continues To Grow In London
The NFL has big plans for London, but the British find it boring – The
Official Site of the National Football League
First NFL QB benched? New overwhelming favorite emerges
NFL: When American football came to London in World War Two - BBC
Roger Goodell says NFL may add new international host for game in
Chicago Bears - Wikipedia
The Long History of American Football in the UK
What It's Like to Attend an NFL Game in London - Travel Savvy Gal
Why Does the NFL Play in London? Here's What to Know