NFL officials have deep roots in Western Pennsylvania
NFL refs back to work under new deal, starting Thursday night – Twin Cities
Future clouded for pass interference replay rule – Football Zebras
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
NFL, officials reach a tentative labor agreement – Football Zebras
New Clapgate information does not provide clarity – Football Zebras
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
NFL, referees reach new collective bargaining agreement through 2025 season
NFL, officials reach tentative labor deal - NBC Sports
NFL suffers referee exodus ahead of new season for second straight year - Mirror Online
Assignments – Football Zebras
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
Ask Farmer: Why do NFL referees have numbers? - Los Angeles Times
Asked and Answered: Oct. 13