Here are the Yankees' 21 retired numbers
DEREK JETER NY NEWSDAY NEWSPAPER YANKEES JETER NIGHT NUMBER
Mariano Rivera's number retired by Yankees - Newsday
The 'New York Yankees retired numbers' quiz
Yankees retired numbers - Newsday
Mariano Rivera's number retired by Yankees - Newsday
Yankees to retire Paul O'Neill's No. 21 jersey this summer - Newsday
List of Yankee Retired Numbers in Monument Park - Newsday
Yankees retired numbers - Newsday