The Gridiron Uniform Database
Football Referee Glossary | Smitteez Sportswear
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Football Referee Shirt | DalcoOfficialsClothing.com – Officially Dalco
Here's how much NFL referees get paid
AFL On-Field Officials
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Ask Farmer: Why do NFL referees have numbers? - Los Angeles Times
Fashion statement: NFL refs to sport new uniforms
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Understanding College Football Officiating - The Crew And Their Keys - Corn Nation
NFL100: Before they were zebras, they were … candy canes? | Football Zebras
The Real Reason NFL Referees Wear Black and White
NFL tweaks referee uniforms ... again - Fandom - ESPN Playbook- ESPN
History of the Official | NFL Football Operations
official equipment | Football Zebras
Smitty CFO College 2" Dye Sublimated Long Sleeve Football Referee Shirt | Ump-Attire.com
NFL100: Before they were zebras, they were … candy canes? | Football Zebras
AFL On-Field Officials
Why do referees wear black and white stripes? | 11alive.com
Why Do NFL Referees Have Numbers on Their Uniforms?
