Super Bowl 2021 refs: Officials assigned to Chiefs/Bucs in Super Bowl 55
Has NFL found answer to fewer challenges with 'replay assistance'?
NFL Caretakers: Clark Promoted, Six New NFL Officials Are Now Caretakers Of The Game – Locker-Report
John Parry on calling Super Bowl 53, pass interference replay, more - Sports Illustrated
2021 was a year of profound loss in the officiating community – Football Zebras
NFL assembles all-Black officiating crew for first time – The Denver Post
NFL head of officiating Dean Blandino resigns
Officials' Responsibilities & Positions
Pottsgrove resident and NFL official Coleman to officiate Super Bowl – The Mercury
NFL's expedited replay process failed spectacularly on DeVonta Smith's catch in NFC Championship Game - CBS Boston
Sarah Thomas will become the first woman to officiate a Super Bowl - The Boston Globe
Replay review in gridiron football - Wikipedia