Who Are the NFL's Best, Worst Refs?
2019 AFC Championship: Clete Blakeman the referee for Patriots vs
Week 17 referee assignments – Football Zebras
Bill Vinovich confirmed as referee for Super Bowl XLIX – Football
An Unofficial Guide to Life as a Ref - WSJ
How are NFL referees assigned to each game? - Quora
Who Are the NFL's Best, Worst Refs?
Images of Week 17 – Football Zebras
Jerome Boger confirmed for Super Bowl – Football Zebras
Images from the Conference Championship games – Football Zebras
3 officials audition for referee position – Football Zebras
Officiating crews for the 2021 season – Football Zebras
An Unofficial Guide to Life as a Ref - WSJ