New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ABC7 New York
Yankees announce next player to have his number retired at Yankee Stadium
New York Yankees Announce Retirement of Paul O'Neill's Number 21 – Celeb Secrets
Yankees retire Paul O'Neill's No. 21 jersey
New York Yankees history: Paul O'Neill's number 21 must be retired
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Paul O'Neill Yankees No. 21 retired
Yankees to retire Paul O'Neill's No. 21 on Aug. 21
NY Yankees retire Paul O'Neill's No. 21
NY Yankees retire Paul O'Neill's No. 21
Paul O'Neill stunned Yankees are retiring his number
Yankees to retire Paul O'Neill's No. 21 on Aug. 21
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