Cowboys–Eagles rivalry - Wikipedia
Philadelphia Eagles Rivalry: The Dallas Cowboys - Sports Illustrated
Out of a Rare Super Bowl I Recording, a Clash With the N.F.L. Unspools - The New York Times
The Hit that Started It All
Great Quarterbacks Lead the Chase for Championships - The New York Times
Reliving the Philadelphia Eagles' Past Chances at Super Bowl Glory, News, Scores, Highlights, Stats, and Rumors
The 10 greatest assistant coaches in Eagles history – NBC Sports Philadelphia
The History of the Super Bowl - WSJ
Super Bowl, History, Appearances, Results, & Facts
Former Lower Merion QB Jack Cummings almost was part of Eagles' 1960 NFL championship ride – Mainline Media News
Spagnola: Stop It All, Dak's Not Going Anywhere