Longtime referee Jerome Boger retiring, NFL says - ESPN
The NFL's Most Hated Players Ever, Ranked
NFL announces retirement of referee Ed Hochuli, known for his bulging biceps and lengthy explanations - Los Angeles Times
NFL keeps losing refs as Super Bowl LIII referee becomes third official to retire in 2019
NFL history: 100 people who shaped the league, pro football - Sports Illustrated
Final whistle: goodbye to Mike Dean, the Premier League ref the fans love to hate, Referees
Jerome Boger hate thread : r/ravens
The NFL loses one of their Best-Known Referees to Retirement. - Bucs Report
Officiating head Al Riveron, NFL's 1st Hispanic ref, retires
Zwerneman: Texas A&M's Red Cashion was one of a kind on, off the field