Yankees retire Paul O'Neill's No. 21 jersey
Yankees to retire numbers of Andy Pettitte, Jorge Posada and Bernie Williams - ABC7 New York
Derek Jeter's No. 2 retired by Yankees; Monument Park plaque unveiled – The Denver Post
Mariano Rivera gets plaque in Yankees' Monument Park
Yankees to Retire Pettitte, Posada and Williams Numbers
Yankees to retire numbers of Pettitte, Posada and Williams
6,682 Jorge Posada Photos & High Res Pictures - Getty Images
Torre has number retired, plaque in Monument Park
Derek Jeter became Yankees legend with rare combo of skill, fortitude