CHFF: The decline and fall of the 49ers empire - Sports Illustrated
San Francisco 49ers: Ranking All 6 Super Bowl Appearances by Team Dominance, News, Scores, Highlights, Stats, and Rumors
San Francisco 49ers - Wikipedia
Cowboys-49ers have rich history
San Francisco 49ers vs. Dallas Cowboys, 1981 NFC Championship
49ers' 1981 season: The Super Bowl win that launched a football dynasty
Cowboys vs. 49ers: Free live stream, TV listing, how to watch NFL playoffs
Super Bowl 2020: Ranking every game in NFL history from best to worst