Ranking MLB's all-time greatest uniforms - ESPN
NBA -- Inside the numbers on the NBA's retired numbers - ESPN
NBA Retires Bill Russell's Number 6 League-Wide, Memorial Patches for All Teams in 2022-23 – SportsLogos.Net News
A number of nuggets about retired numbers around the Major League
Shaq and 31 more athletes with numbers retired by multiple teams
Bill Russell's No. 6 Joins Rare Class of Retired Jersey Numbers - The New York Times
Would Celtics re-issue retired numbers? Don't count on it – Boston Herald
History of retired numbers dates back to Lou Gehrig Day
Which pro sports teams have the most retired numbers?
The 'First number retired for every MLB team' quiz
ALL OF THE RETIRED NUMBERS IN THE MLB!
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago
Infographic: Retired numbers in baseball Rockies baseball, Baseball teams logo, Baseball history
Every MLB team's retired numbers