February 25 – Happy Birthday Paul O'Neill
New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed
Paul O'Neill and the trade that changed everything - Pinstripe Alley
Paul O'Neill remembered as one of great Yankees
Dear Paul O'Neill'—A letter to the former Yankee about his support
Paul O'Neill calls Yankees jersey retirement 'highest honor
Yankees Mag: The Warrior's Day Cometh
Paul O'Neill Remembers Yankees' 1998 World Series Championship Season
Bleeding Yankee Blue: PAUL O'NEILL: A YANKEE GREAT OF OUR GENERATION
Paul O'Neill's No. 21 to Be Retired By Yankees – NBC New York
Paul O'Neill (baseball) - Wikipedia