Chicago Bears, American Football Wiki
Chicago Bears: Take a look back at a century of uniforms
Chicago Bears: Take a look back at a century of uniforms
Ranking NFL's current throwback jerseys: Eagles' perfect 'Kelly Green'; high marks for Patriots, 49ers
Throwback uniform - Wikipedia
Logos and uniforms of the Chicago Bears - Wikipedia
Bronko Nagurski, tackle and fullback for the Chicago Bears 1936. Art by Merv Corning.
Chicago Bears: Take a look back at a century of uniforms
Chicago Bears News: June 10, 2019 - Windy City Gridiron
Bears' social justice committee addresses 1936 throwback jerseys