Philadelphia Eagles Rivalry: The Dallas Cowboys - Sports Illustrated
Cowboys-Eagles rivalry, American Football Wiki
Eagles vs. Giants playoff history - Bleeding Green Nation
Dallas Cowboys - Wikipedia
Is the Chargers and Raiders rivalry more intense than the Cowboys and Eagles rivalry? - Quora
The origin of the Eagles-Cowboys rivalry - Bleeding Green Nation
Cowboys vs. 49ers: Upcoming Game Info & Rivalry History - Ticketmaster Blog
Philadelphia Eagles - Wikipedia