Two more NFL officials retire, bringing the number of retirements to nine - ProFootballTalk : r/nfl
NFL replay official Carl Madsen dies after Sunday's game
NFL replay official Carl Madsen dies after Sunday's game - National Football Post
An NFL Official Who Worked the Tennessee Titans-Kansas City Chiefs Game Died Afterward - Sports Illustrated Tennessee Titans News, Analysis and More
Bob Boylston, 2-time Super Bowl umpire, dies at 81 – Football Zebras
2021 NFL season - Wikipedia
Behind the scenes at the NFL's new replay review center in New York - Sports Illustrated
Photos: NFL official Carl Madsen, who died Oct. 24 after Titans-Chiefs game
Behind the scenes at the NFL's new replay review center in New York - Sports Illustrated
Movies on TV this week: April 5: 'Butch Cassidy and the Sundance Kid'
2021 was a year of profound loss in the officiating community – Football Zebras
Longtime NFL official Carl Madsen dies on way home from Chiefs-Titans
An NFL Official Who Worked the Tennessee Titans-Kansas City Chiefs Game Died Afterward - Sports Illustrated Tennessee Titans News, Analysis and More
NFL referee Carl Madsen dies after Chiefs vs. Titans game - Sports Illustrated
2021 was a year of profound loss in the officiating community – Football Zebras