New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ESPN
Paul O'Neill's No. 21 to be retired by Yankees
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
The New York Times - No. 58,890 (27 Nov 2020) PDF
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
As Paul O'Neill's No. 21 is retired, one last kick of a water cooler
Calaméo - SEPTEMBER 28. 1995
NY Yankees retire Paul O'Neill's No. 21
Lovin' Life After 50 - East Valley - Nov. 2022 by Times Media Group - Issuu
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
The New York Times 2017-05-03, PDF, Donald Trump
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed