Retired Uniform Numbers in the American League
History of retired numbers dates back to Lou Gehrig Day
Retired shirt numbers: Clubs and players to give & receive honour
Infographic: Packers' retired numbers
History of retired numbers dates back to Lou Gehrig Day
Every MLB team's retired numbers
History of retired numbers dates back to Lou Gehrig Day
Yankees Retired Numbers
Some MLB Players Wearing #21, All Wearing 21 Patches Today for
Every MLB team's retired numbers – NBC Sports Chicago