Retired Numbers, History

List of National Football League retired numbers - Wikipedia

Have the Yankees taken retired numbers too far?

Yankee Stadium: Monument Park - Retired Numbers - Mickey M…

MLB Retired Numbers: An Overview

Retired Uniform Numbers in the American League

Every MLB team's retired numbers

File:New Jersey Devils retired numbers 27 3 4 in Feb 2013.jpg

On the Yankees, retired numbers and a solution in search of a problem

Retired Jerseys, Los Angeles Lakers Lakers

Peering into the Rafters: The Next 5 Chicago Bulls Retired Numbers

Retired Uniform Numbers in the American League

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