New York Yankees to retire Paul O'Neill's number
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed
Is Paul O'Neill in the Baseball Hall of Fame? - Quora
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Paul O'Neill will finally have number retired by Yankees
Paul O'Neill Is Having His Number Retired By The Yankees - Locked on MLB - February 24, 2022
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
NY Yankees royalty honored as Paul O'Neill's No. 21 is retired
Former teammates, coaches weigh in on Paul O'Neill ahead of Yankees' number retirement