US referee numbers are plunging and aggression is to blame | Referees | The Guardian
How Much Are NFL Referees Paid? | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
NFL Officials: Preparing for Success | NFL Football Operations
New NFL font
How Much Are NFL Referees Paid? | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
Yeah, the O-line is important, but referees are Tom Brady's best friends
NFL100: Before they were zebras, they were … candy canes? | Football Zebras
Officials' Responsibilities & Positions | NFL Football Operations
Why do college football referees have an 'S' on their uniform? - Quora
Why do college football referees have an 'S' on their uniform? - Quora
NFL Officials: Preparing for Success | NFL Football Operations
What are the black string-like things football referees wear on their hands for? - Quora
NFL Relaxes Restrictions on Jersey Numbers - The New York Times
Why Football Referees Have Letters & Numbers – vIQtory Sports
Law 5 - The Referee
NRL referees should take step back in finals
Why Football Referees Have Letters & Numbers – vIQtory Sports
What do the letters stand for on the back of football referees' shirts? - Quora
Super Bowl LIV: How NFL Measures First Downs Is Primitively Low-Tech
Officials' Responsibilities & Positions | NFL Football Operations
Ed Hochuli, N.F.L. Referee, Has Long Had Fan Support - The New York Times
Misogyny greets World Cup's first female refs – DW – 06/29/2022
What do the letters stand for on the back of football referees' shirts? - Quora
Column: NFL officials make far too many mistakes, and it's worse in the playoffs - The San Diego Union-Tribune
Ump Attire - The NFL is back! Let's wish our officials... | Facebook
/cdn.vox-cdn.com/uploads/chorus_asset/file/24017753/usa_today_17483829.jpg "Peyton and Eli Manning admire referee Clete Blakeman's buff body - Outsports")
Peyton and Eli Manning admire referee Clete Blakeman's buff body - Outsports
