Yankees retire Jorge Posada's No. 20 in Monument Park
New York Yankees retired Paul O'Neill's No. 21 jersey
Highlights of Jorge Posada's pregame ceremony at Yankee Stadium
Jorge Posada has his No. 20 retired by the Yankees - NBC Sports
How Jorge Posada lit fires to reach Yankees immortality
Jorge Posada honored by Yankees with Monument Park plaque, has number retired - Newsday
Jorge Posada has No. 20 retired by Yankees on 'one of the happiest days of my life' – New York Daily News
Yankees retired numbers
Derek Jeter's No. 2 officially retired by Yankees, National Sports