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Cleveland Browns, American Football Database
New York Giants, American Football Database
NFL All Super Bowl Winners 1967-2019
Monday Night Football, American Football Database
Las Vegas Raiders, American Football Database
Most NFL Super Bowl Wins (1967-2019)
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Super Bowl Xxiii: Most Up-to-Date Encyclopedia, News & Reviews
List of Super Bowl champions - Wikipedia
NFL All Super Bowl Winners 1967-2019
National Football League, American Football Wiki
History of the National Football League in Los Angeles, American Football Database