New York Yankees history: Paul O'Neill's number 21 must be retired
Yankees retired numbers: Paul O'Neill latest to be added to list
Yankees retire Paul O'Neill's No. 21 on Sunday #shorts
New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ESPN
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Yankees honor Paul O'Neill with Monument Park plaque
Yankees to retire Paul O'Neill's No. 21 at Yankee Stadium on August 21st - Pinstripe Alley
Yankees to retire Paul O'Neill's No. 21 on Aug. 21
Paul O'Neill's No. 21 to be retired by Yankees
New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ABC7 New York
Fans boo Yankees management as New York retires All-Star right fielder Paul O'Neill's No. 21 jersey