Philadelphia Eagles - Wikipedia
Sacco Sez: How the orange and blue began
Philadelphia Eagles, History & Notable Players
Tennessee Titans, History & Notable Players
The Nation's Game: The NFL from the Pro Football Hall of Fame
NFL Nostalgia: Ranking the Best Teams in NFL History
On This Day in The Bay: Goodbye Old Kezar
Chiefs return home to face reeling Bears, losers of their past 12
North American Football League, Rapid City Wiki
Raiders get payback in 1973 playoffs
National Football League - 1973 NFL Teams
National Football League - 1973 NFL Teams
1973 NFL Season Highlights & Super Bowl VIII Highlights
1973 NFL passing stats - Players