Yankees retire Jorge Posada's No. 20 in Monument Park

Yankees Will Retire Numbers for Jorge Posada, Bernie Williams, Andy Pettitte - WSJ

Uncle Mike's Musings: A Yankees Blog and More: The Unwritten Rules of Monument Park

Derek Jeter's No 2 to be retired, last of Yankees' single digits

Jeter's No 2 retired by Yanks; Monument Park plaque unveiled

Derek Jeter's No. 2 retired by Yankees, plaque unveiled

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

Yankees legends: Andy Pettitte gushes about Jorge Posada's career

Yankees retire Posada's No. 20 in Monument Park

Sunday Gravy: Yankees would rather retire No. 13

Injury to C.C. Sabathia and Another Yankees Loss Cast Shadow on Day Honoring Andy Pettitte - The New York Times

Jeter's No 2 retired by Yanks; Monument Park plaque unveiled

Jorge Posada debuts on Hall of Fame ballot