Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
Officiating crews for the 2015 season – Football Zebras
Reference Desk – Page 2 – Football Zebras
3 officials audition to be an NFL referee – Football Zebras
NFL tweaks pregame football procedure in the rulebook after Deflategate
2022-23 bowl officiating assignments – Football Zebras
NFL Rules & Policy for Inflating & Deflating Game Balls
What really happened during Deflategate? Five years later, the NFL's 'scandal' aged poorly - ESPN
Report: NFL Changing How Game Balls Are Handled, Monitored After Deflategate
The Deflategate Scientists Unlock Their Lab - The New York Times
Alternate officials, like playoffs, have expanded over time – Football Zebras