Wrigley Field - Wikipedia
Wrigley Field transformed to football field for Northwestern-Purdue game
With a rich history in the sport, Wrigley Field hosts football again in hopes of more games in the future
Iowa, Northwestern to play at Wrigley Field in November - On3
College football at Wrigley Field: How the Friendly Confines transformed into a gridiron
Photo Essay: Football at Wrigley Field - Stadium Tech Report
Wrigley Field, Chicago Cubs ballpark - Ballparks of Baseball
Wrigley Field to Host One-Way Football: Why Bother? - CBS News
College football video games back in 2020? 'Gridiron Champions' announced
College football at Wrigley Field: How the Friendly Confines transformed into a gridiron