History of Celtics retired numbers - CelticsBlog
Infographic: Packers' retired numbers
Retired number - Wikipedia
Every MLB team's retired numbers
Every MLB team's retired numbers
File:Los Angeles Kings - Retired Numbers of Superstars - Staples Center - Los Angeles, CA - USA (6914447045).jpg - Wikipedia
History of Celtics retired numbers - CelticsBlog
Mets Retired Numbers. On April 15, 1997 in a historic…, by New York Mets
List of National Football League retired numbers - Wikipedia
The history - and expedience - of the Twins retiring jersey numbers - Twinkie Town
Retired Jerseys, Los Angeles Lakers Lakers
The Yankees Retired Derek Jeter's Number, and Things Got Slightly Weird