As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Paul O'Neill's No. 21 to be retired by Yankees
Paul O'Neill's number to be retired by Yankees
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
How many jersey numbers do the Yankees have left? - Deseret News
Paul O'Neill will finally have number retired by Yankees
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