Every MLB team's retired numbers
History of retired numbers dates back to Lou Gehrig Day
Why don't the Miami Marlins have any retired numbers?
Manager Numbers. Had a little fun over at MLB — I picked…, by Joe Posnanski, Joe Blogs
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Oakland Athletics - Wikipedia
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago
1 Legend from Every MLB Team Who Deserves to Have Their Number Retired, News, Scores, Highlights, Stats, and Rumors
Yankees Retired Numbers - Who Are The 22 Yankees Who Wore Them
Every MLB team's retired numbers
Every MLB team's retired numbers
Every MLB team's retired numbers – NBC Sports Chicago
Yankees Retired Numbers
Da Greats: Retired Chicago Bears Jersey Numbers - The Chicago Audible
Players now have jersey numbers, and teams can retire jersey numbers of former players « Blog « ZenGM
Retired Uniform Numbers in the American League
