What It Takes To Be An NFL Referee
NFL fires ref who missed easy call in Browns game. That's unprecedented
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
Under Armour has college football 'zebras' on its side
NFL Referee Salary: How Much They Make + Super Bowl Bonus
NFL100: Before they were zebras, they were … candy canes? – Football Zebras
NFL Referee Salary: How Much They Make + Super Bowl Bonus
NFL referee Jerome Boger, who threw a flag on the 'Seattle Mariners' last season, is retiring - Field Gulls