Yankees to retire Derek Jeter's number on May 14 - Sports Illustrated
Yankees retired numbers
How many jersey numbers do the Yankees have left? - Deseret News
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
Yankee Retired Numbers: The All-Time Numerical Lineup of Yanks
Yankees Retired Numbers
Yankees Retired Numbers
Who were the first and last Yankees players to wear the retired numbers? - Pinstripe Alley
Should Alex Rodriguez's number 13 be retired by the New York Yankees?