As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Paul O'Neill Number Retirement before Yankees vs. Blue Jays on Sunday, August 21, 2022
Yanks' Cashman backs Boone to turn `slings' into 'bouquets' - The San Diego Union-Tribune
New York Daily News back pages 2022
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed
Paul O'Neill Number Retirement before Yankees vs. Blue Jays on Sunday, August 21, 2022
Paul O'Neill Number Retirement before Yankees vs. Blue Jays on Sunday, August 21, 2022
Yankees to retire Paul O'Neill's No. 21 on Aug. 21
New York Daily News back pages 2022 – New York Daily News
Yankees to retire Paul O'Neill's No. 21: See the complete list of retired numbers