The NFL's First Playoff Game Was Played Indoors in a Hockey Arena
A change from Wrigley to Soldier Field
At Long Last, Wrigley Field Receives National Historic Landmark Status - Bleacher Nation
Ivy, brick walls and pennant flags: Celebrating 100 years of Wrigley Field - Sports Illustrated
Chicago sports teams, stadiums an iconic presence in city
Chicago celebrates Wrigley Field's 100th birthday
NFL stadiums have made a huge leap
Wrigley Field historical sleuthing: Chicago Bears edition - Bleed Cubbie Blue
Soldier Field, Buildings of Chicago
Wrigley Field designated as a National Historic Landmark
Wrigley Field - Wikipedia
Bears take $197 million step toward building new stadium
Football in baseball stadiums
Wrigley Field: A Century of Survival – Society for American Baseball Research
History of Wrigley Field - Wikipedia