Officially a problem: State looks for more referees, umps, officials
Who is the female referee in Super Bowl 2021? Meet Sarah Thomas, the NFL's first woman official
8th on-field official is not likely to be implemented soon in the NFL, if ever – Football Zebras
Officiating crews for the 2023 season – Football Zebras
8th on-field official is not likely to be implemented soon in the NFL, if ever – Football Zebras
PRESEASON GAME 2 - CHIEFS AT CARDINALS (8-19-23) by Kansas City Chiefs - Issuu
NFL, referees settle lockout
Mike McCarthy should be on hot seat for Cowboys' loss
NFL Will Hire Up to 17 Full-Time Officials, Add 8th Referee to Game Crews, News, Scores, Highlights, Stats, and Rumors
Here's how much money NFL officials make working games – NBC Sports Chicago
NFL Health and Safety Fact Sheet