Yankees retired numbers and 23 legends who wore them
Mets Retired Numbers. On April 15, 1997 in a historic…, by New York Mets
Players now have jersey numbers, and teams can retire jersey numbers of former players « Blog « ZenGM
Retired number - Wikipedia
List of National Basketball Association retired numbers - Wikipedia
File:Packers Retired Numbers at Lambeau Field.jpg - Wikipedia
Infographic: Packers' retired numbers
Shane Doan becomes first player in Coyotes history to have number retired
Every MLB team's retired numbers
History of Celtics retired numbers - CelticsBlog