NFL Expansion Teams: 10 Potential Cities, From Austin to London
NFL International Series - Wikipedia
NFL to play 4 games in London, 1 in Mexico City in 2019
2023 NFL London games: All you need to know as the league returns to the UK, NFL News
NFL Moving London, Mexico City Games Back To U.S. Stadiums
English Reserve Meets N.F.L. Bombast - The New York Times
NFL moving London, Mexico City games back to U.S. stadiums
The Globalization of the NFL
NFL cancels international games for 2020 season
The NFL's Mexico City turf problem at Estadio Azteca, explained
NFL moving Mexico City game back to US stadium - The Yucatan Times