Paul O'Neill discusses number retirement by Yankees
Paul O'Neill's career celebrated with Monument Park plaque, by MLB.com/blogs
Paul O'Neill remembered as one of great Yankees
Yankees Social Media: The Warrior comments on jersey retirement - Pinstripe Alley
Ultimate Warrior #21(Paul O'Neill tribute)
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed, Highlands News-Sun
Yankees honor Paul O'Neill with Monument Park plaque
Paul O'Neill Chant
Reaction: Yankees Retire #21 for Paul O'Neill