Why is there a rivalry between the Philadelphia Eagles and the Dallas Cowboys? - Quora
Dallas Cowboys - Wikipedia
Cowboys vs. Eagles: Top 10 Moments in the NFC East Rivalry
Dallas Cowboys - Wikipedia
HISTORY: The Dallas Cowboys – Philadelphia Eagles rivalry
Rivalry recap: Cowboys vs. 49ers
Philadelphia Eagles - Wikipedia
Philadelphia Eagles Super Bowl Wins History, Appearances, and More
Eagles vs. Cowboys: More Than A Rivalry
Dallas Cowboys - Wikipedia
A look back at the recent history of the Eagles Cowboys rivalry