Retired Uniform Numbers in the American League
List of Major League Baseball retired numbers - Wikipedia
Yankees Retired Numbers
Fascinating Aspects About the Retired Uniform Numbers of the Detroit Tigers – Society for American Baseball Research
Every MLB team's retired numbers
How many teams in the NBA have retired number 23?
Retired Uniform Numbers in the American League
Retired number, sports award
NBA to retire Bill Russell's number league-wide: Which current NBA players wear No. 6?
Will Lakers retire both of LeBron James' jersey numbers when he hangs it up? - Los Angeles Times
Retired numbers in Phillies team history Phillies Nation - Your source for Philadelphia Phillies news, opinion, history, rumors, events, and other fun stuff.