The worst Kansas City Chiefs seasons might not be as bad as we thought - Arrowhead Pride
1971–72 NFL playoffs - Wikipedia
This Day in Dolphins History: December 25th, 1971: Dolphins vs Chiefs THE LONGEST GAME EVER PLAYED - Miami Dolphins
KICK BEATS CHIEFS - The New York Times
The Longest Game in NFL History Lasted More Than 7 Hours - FanBuzz
1971-12-25 AFC DIvisional Miami Dolphins vs Kansas City Chiefs
The Good, the Bad, & the Ugly: Kansas City Chiefs: Heart-Pounding, Jaw-Dropping, and Gut-Wrenching Moments from Kansas City Chiefs History: Bill Althaus, Len Dawson: 9781572439283: : Books