Yankees to retire numbers of Pettitte, Posada and Williams
New York Yankees retired numbers: Is team too generous? - Sports Illustrated
New York Yankees retire Bernie Williams' No. 51, unveil plaque - ESPN
Yankees to retire Paul O'Neill's No. 21: See the complete list of retired numbers
During Dry Spell, Yankees Emphasize Monument Park - The New York Times
Yankees to retire Nos. of Bernie, Jorge, Pettitte
New York Yankees: Why Is Bernie Williams Often Left Out?
A mathematical examination of when the Yankees will run out of numbers to retire
New York Yankees ceremony addiction is getting out of hand
NY Yankees royalty honored as Paul O'Neill's No. 21 is retired
How Paul O'Neill Stacks Up Against the Other Yankees With Retired Numbers
Here are the Yankees' 21 retired numbers Who belongs and who doesn't? Andy Pettitte, Jorge Posada, Bernie Williams, more
Yanks lead way with legacy of retired numbers
Bernie Williams Deserves More Credit For Making The Yankees A Dynasty