File:New Jersey Devils retired numbers 27 3 4 in Feb 2013.jpg - Wikipedia
Every MLB team's retired numbers
File:Miller Park Retired Numbers (4953172314).jpg - Wikimedia Commons
History By The Numbers (FLCeltsFan) - CelticsBlog
Retired number - Wikipedia
Have the Yankees taken retired numbers too far?, Bronx Pinstripes
Every MLB team's retired numbers
Utah Jazz Legends, Retired numbers, CharleyMarley
File:Adelaide 36ers retired numbers.jpg - Wikipedia
Giants Ring of Honor, Giants History
Lot Detail - Chicago Blackhawks Retired Numbers Banner Frame