Die-Hard or Fair-Weather Fans? Ranking All 32 NFL Fan Bases
Ranking NFL Fan Bases: Who has the Best Supporters and Fans?
Cincinnati Bengals fans named most loyal in NFL, according to new ranking
Who are the most popular NFL teams? Cowboys lead US in search hits
BACtrack Answers: Which NFL Team's Fans Drink the Most?
Cleveland Browns voted NFL's best fan base
Worst Fans in the NFL: Most Obnoxious Football Fanbases, Ranked - Thrillist
Which are the most miserable NFL fan bases? We ranked them - Los Angeles Times
The Geography of NFL Fandom - The Atlantic