From the NFL Archives: The Best of the AFL 1960-1969
From the Hall of Fame Archives: The 1960's All-Decade Team
Review of The NFL in the 1970s
Valley News - Bigger and better: Expansion helped NFL explode in popularity in 1960s and '70s
How one NFL historian reassesses the all-AFL team of the 1960s - Talk Of Fame
Regulations you should know about NFL footballs - Dawgs By Nature
New book tells story of HBCU legends of the American Football League — Andscape
The History Of How Football Became America's Favorite Game
Pro Football Journal: Players of the Decade—1960s
Compared to now, football in the 1960s was not overexposed
The NFL routinely dominates TV ratings. How did the league become the behemoth it is today? - The Athletic
Steelers Throwback Thursday: Steelers' history in the NFL/AFL Merger - Steel City Underground