Retired Uniform Numbers in the National League
Have the Yankees taken retired numbers too far?
Infographic: Packers' retired numbers
A number of nuggets about retired numbers around the Major League
Infographic: Packers' retired numbers
Orlando Magic need to honor history and retire jerseys
History of Celtics retired numbers - CelticsBlog
New York Mets - Retired numbers – LOST DOG Art & Frame
All-time list of retired numbers in the NBA
Retired number - Wikipedia
File:Mets retired numbers.png - Wikipedia
Infographic: Packers' retired numbers