File:Map of Cities in the USA and Canada with MLB, MLS, NBA, NFL or NHL Teams.png - Wikimedia Commons
NFL teams' most rabid fans, in one county-by-county map - Vox
The Geography of NFL Fandom - The Atlantic
The Geography of NFL Fandom - The Atlantic
NFL Franchises - International Mapping
Mapping the NFL The Modified Mercator
24 maps that explain the NFL
File:NFL teams locations.PNG - Wikipedia
NFL Stadiums Location Poster Map
NFL team and logo history 1920 - 2017
Which NFL Team Are You Stuck Watching Every Sunday?