Yankees to retire Paul O'Neill's No. 21 jersey this summer - Newsday
Yankees fall to Cardinals as Clay Holmes gives up two-out, two-run double in eighth - Newsday
Mark Reynolds becomes Yankees' latest No. 39 - Newsday
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Derek Jeter, Out of Pinstripes and in Monument Park, Can Finally Reflect - The New York Times
As Paul O'Neill's No. 21 Is Retired, One Last Kick of a Water Cooler - The New York Times
Paul O'Neill's No. 21 to be retired by Yankees
Paul O'Neill (baseball) - Wikipedia
Yankees' retirement of Paul O'Neill's number might be a stretch - Pinstripe Alley