Yankees retire Jorge Posada's No. 20 in Monument Park
Yankees to Wear Bernie Williams Patch on May 24th – SportsLogos.Net News
Yankees to retire numbers of Posada and Bernie, too
Yankees to dedicate Mariano Rivera's Monument Park plaque – The Denver Post
Yankees to Retire Pettitte, Posada and Williams Numbers
Yankees retired numbers and the baseball legends who wore them
A mathematical examination of when the Yankees will run out of numbers to retire
Jason Giambi retires, Yankees will honor Andy Pettitte, Jorge Posada and Bernie Williams and more MLB news
Jeter returns as Yankees honor 1998 team at Old-Timers' Day, Boone booed by some - ABC News
Yankees Will Retire Numbers for Jorge Posada, Bernie Williams, Andy Pettitte - WSJ