The Yankees Retire Paul O'Neill's Number 21 - The New York Times
Notebook: Paul O'Neill gets plaque in Monument Park
The Yankees Survive to Play the Astros in the American League Championship Series - WSJ
Paul O'Neill, Baseball Wiki
Yankees retire Paul O'Neill's No. 21 jersey, Cashman booed
This Day in Yankees History: Paul O'Neill's three homers spark playoff run- August 31, 1995 - Pinstripe Alley
Lot Detail - CIRCA 1998 NEW YORK YANKEES PAUL O'NEILL GAME WORN OUTFIELDERS GLOVE - PHOTOMATCHED (PSA/DNA AUTHENTICATED)
Orioles-Cardinals series preview: Battle of the birds in Birdland - Camden Chat
62: Aaron Judge, the New York Yankees, and the Pursuit of Greatness by Bryan Hoch, Hardcover
Lot Detail - 1999 Paul O'Neill Game Used and Signed New York Yankees Home Jersey With DiMaggio Patch
The Athletic] The Yankees have asked MLB if they can stop issuing uniform numbers to their manager and coaches because they're running out of numbers that aren't retired : r/baseball
O’Neill classic tape job.
Paul O'Neill Yankees Signed Game Used Baseball Bat COA
Paul O'Neill, Signed Worn 1997 All Stars Game Jersey
Remembering The 1996 Yankees: Paul O'Neill, The Warrior, Was Born - CBS New York