Philadelphia Eagles - Wikipedia
Arizona Cardinals Team History and Timeline - Sports Illustrated
Some of the best Eagles also played for the Cowboys
Philadelphia Eagles - Wikipedia
Philadelphia Eagles Rivalry: The Dallas Cowboys - Sports Illustrated
Cowboys-Eagles rivalry, American Football Wiki
Cowboys vs. 49ers playoffs: A long history between these two NFC rivals - Blogging The Boys
Cowboys vs. Eagles: The 10 greatest moments in the history of a rivalry that began 60 years ago
The Philly-Dallas Rivalry: Why do the Eagles hate the Cowboys? - - Eagles News Blog