NFL announces German regular-season series for 2022-2025 seasons; 49ers could play in Mexico City - Niners Nation
2023 NFL International Series: Buffalo Bills and Tennessee Titans to play at Tottenham; Kansas City Chiefs and New England Patriots set for Germany debuts, NFL News
European League of Football - Wikipedia
Global popularity of the NFL
NFL eyes games in Spain and France after UK and Germany success, NFL News
NFL make a huge splash in Germany - Coliseum
2022 NFL Schedule: How many games will each NFL team play?
NFL ANNOUNCES SCHEDULE FOR FIVE INTERNATIONAL GAMES IN 2023
NFL taking next step toward playing games in Germany, to unveil three finalist cities
NFL eyes games in Spain, France amid international growth - ESPN