Retired Uniforms by Division: National League West - Beyond the Box Score
Lakers News: First Great Lakers Center Will Have Jersey Posthumously Retired - All Lakers
Retired Uniform Numbers in the National League
How players are using uniform numbers to break MLB's unwritten rules - ESPN
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
How many uniform numbers are retired by the New England Patriots?
Every MLB team's retired numbers
List of Major League Baseball retired numbers - Wikipedia
Mets to retire numbers of Darryl Strawberry, Doc Gooden
Retired Uniform Numbers in the American League
Full list of Atlanta Braves retired numbers -- and when they were retired