As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
New York Yankees to retire Paul O'Neill's No. 21 on Aug. 21
Yankees retired numbers: A look at all of the jersey numbers players cannot wear in the Bronx
Paul O'Neill (baseball) - Wikipedia
New York Yankees Paul O'Neill jersey retirement Toronto Blue Jays
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed - The San Diego Union-Tribune
Readers sound off on Yankees retired numbers, the GOP and the 9/11 Tribute Museum – New York Daily News
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
Yankees retire Paul O'Neill's No. 21 jersey - NBC Sports
NY Yankees royalty honored as Paul O'Neill's No. 21 is retired
Yankees Mag: The Warrior's Day Cometh
Paul O'Neill's No. 21 to be retired by Yankees
NY Yankees retire Paul O'Neill's No. 21
Who is former Yankees player Paul O'Neill's wife?