Yankees to retire Paul O'Neill's No. 21 jersey this summer - Newsday
New York Yankees history: Paul O'Neill's number 21 must be retired
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
New York Yankees Announce Retirement of Paul O'Neill's Number 21 – Celeb Secrets
Yankees to retire Paul O'Neill's No. 21 jersey this summer - Newsday
New York Yankees retired Paul O'Neill's No. 21 jersey
Yankees to retire Paul O'Neill's No. 21 jersey this summer - Newsday
New York Yankees history: Paul O'Neill's number 21 must be retired
New York Yankees history: Paul O'Neill's number 21 must be retired
Paul O'Neill on No. 21 retirement Yankees