Joe was the rock': Twins retire Mauer's No. 7 in Target Field ceremony
New York Yankees Retired Numbers - Sports Illustrated
Minnesota Twins - Wikipedia
Minnesota Twins, History & Notable Players
Every MLB team's retired numbers – NBC Sports Chicago
Numbers game: As playoffs hit Target Field, Twins fans wore 'em all
The 9 greatest players in Minnesota Twins history
Minnesota Twins History
A number of nuggets about retired numbers around the Major League
Numbers game: As playoffs hit Target Field, Twins fans wore 'em all
The 24 best players in Minnesota Twins history
Twins' all-time retired numbers
New York Yankees Retired Numbers - Sports Illustrated
RP Joe Nathan Announces Retirement - Last Word On Baseball