Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron
A REMEMBRANCE OF GEORGE HALAS & THE ROLE HE PLAYED IN THE SUCCESS OF THE NFL
NFL History: 100 objects that tell the story of football - Sports Illustrated
George S Halas – A Word on Papa Bear & 1963 NFL Championship Highlight
Throwback: The truth about George Halas and the NFL's ban on black players - Windy City Gridiron
History of the NFL Draft Part 2 - The NFL Draft
How the Chicago Bears' 1932 championship changed the NFL
1937 nfl championship game highlights : r/nfl
Duke Slater, NFL's 1st Black lineman, is now Hall of Famer
Bears Proud To Wear 1936 Uniforms
To beat the Bears, Broncos' offensive line must be a brick wall - Mile High Report
George Halas Through the Years
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's Humble Beginnings