Monument Park (Yankee Stadium) - Wikipedia
New York Yankees retire Paul O'Neill's No. 21; GM Brian Cashman, owner Hal Steinbrenner booed by fans - ESPN
If we must retire one more Yankee number . . .
Opposing fans need to shut up about Yankees retiring Paul O'Neill's number
Yankees retire Paul O'Neill's No. 21 jersey - NBC Sports
Yanks to retire numbers for Williams, Pettitte, Posada
Jeter's No 2 retired by Yanks; Monument Park plaque unveiled
Yankees: Who Will Be The Next Player To Get Their Number Retired? - Unhinged New York
Me and My Dad: A Baseball Memoir - Kindle edition by O'Neill, Paul, Rocks, Burton. Humor & Entertainment Kindle eBooks @ .