NFL officials honor late colleague with patch on hats – Football Zebras
Referee assignments, preseason week 2 – Football Zebras
NFL's first Black referee, NC-born Johnny Grier, dies at 74
NFL100: Before they were zebras, they were … candy canes? – Football Zebras
Longtime NFL Referee Bill Leavy Dead At 76
NFL history: 100 people who shaped the league, pro football - Sports Illustrated
Pro Football Hall of Fame - Wikipedia
Jim Poole, back judge in 2 Super Bowls, dies at 89 – Football Zebras
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
Howard Roe, 13-year line judge and referee passes away – Football Zebras
Fᴏᴏᴛʙᴀʟʟ Zᴇʙʀᴀs🇺🇦 (@footballzebras) / X
Football Zebras - Analysis and commentary of the NFL's officials and the calls they make
NFL officials honor late colleague with patch on hats – Football Zebras