Yankees Retire Jorge Posada's No. 20, With a Nod to No. 15 - The New York Times

Is Don Mattingly the only New York Yankees player to not be booed by New York Yankee fans at Yankee Stadium? If so, why? - Quora

Posada immortalized with retirement of No. 20

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

2021 New York Yankees Media Guide, PDF, Major League Baseball

Yankees retire Jorge Posada's No. 20

08/17/2023 Weirs Times by The Weirs Publishing Company - Issuu

OPINION: Jorge Posada A Great Yankee, But Not A Hall Of Famer - SB Nation New York

Uncle Mike's Musings: A Yankees Blog and More: October 6, 1947: A Classic Fall Classic

Yankees legend Jorge Posada was left 'hurt' and 'confused' by how his Yankees stint ended