History of the Chicago Bears - Wikipedia
List of best NFL players from Minnesota evokes epic all-era roster
Chicago Bears Jersey-1936 Road-Bronko Nagurski
1936 Chicago Bears vs. Pittsburgh Pirates Program - Nagurski TD, Lot #45166
Answer to Mr. Platten Sep. 24, 1936
Chicago Bears Jersey-1936 Road-Bronko Nagurski
How George Halas' columns for the Chicago Tribune, a field goal and a charity game helped the Chicago Bears prove their legitimacy in 1935
The NFL: 100 Years of football - Los Angeles Times
From the Hall of Fame Archives: The 1930's All-Decade Team