New York Yankees honor Paul O'Neill with Monument Park plaque - ESPN

Paul O'Neill's No. 21 to be retired by Yankees

Paul O'Neill and the trade that changed everything - Pinstripe Alley

Defector] The Yankees Are Retiring Paul O'Neill's Number In Monument Park, Which Is Different From Giving Him A Plaque In Monument Park, Which They Already Did, And Also Different From Giving Him

Defector] The Yankees Are Retiring Paul O'Neill's Number In Monument Park, Which Is Different From Giving Him A Plaque In Monument Park, Which They Already Did, And Also Different From Giving Him

Defector] The Yankees Are Retiring Paul O'Neill's Number In Monument Park, Which Is Different From Giving Him A Plaque In Monument Park, Which They Already Did, And Also Different From Giving Him

Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed

New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ESPN

Yankees Retire Paul O'Neill's Jersey Number 21 - The Radicards® Blog

Yankees honor Tino Martinez with plaque - ESPN - Yankees Blog- ESPN

Yankee Stadium (1923) - Wikipedia