New York Yankees retired Paul O'Neill's No. 21 jersey
Paul O'Neill Number Retirement before Yankees vs. Blue Jays on
In recognition of Paul O'Neill having his #21 retired at Yankee
Paul O'Neill (baseball) - Wikipedia
NY Yankees royalty honored as Paul O'Neill's No. 21 is retired
The Yankees Retire Paul O'Neill's Number 21 - The New York Times
The Yankees need to reissue Paul O`Neill's no. 21 - Pinstripe Alley
Yankees Need To Honor Hank Bauer
Paul O'Neill Yankees No. 21 retired
Yankees retire Paul O'Neill's No. 21 jersey - NBC Sports
List of Major League Baseball retired numbers - Wikipedia