Dallas Cowboys - Wikipedia
Rivalry recap: Cowboys vs. 49ers
Are the Packers and Bears or the Eagles and Cowboys a better rivalry? - Quora
This Might Finally Be the Cowboys' Year - Sports Illustrated
History of the Philadelphia Eagles - Wikipedia
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Dallas Cowboys - Wikipedia
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NFL GAMEDAY RESOURCES: Dallas Cowboys vs. Philadelphia Eagles, The Cowboys Eagles rivalry continues, 2013-2014 Dallas Cowboys NFL Game 16
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