Mike Piazza's post-9/11 home run remains memorable to New York City 20 years later
20 years later, the enduring legacy of the Mike Piazza home run - ESPN
New York Mets - Wikipedia
The time Mike Piazza quit baseball
Mike Piazza: Caught In The Machine, by Alexander Goot
20 years later, the enduring legacy of the Mike Piazza home run - ESPN
Ken Griffey Jr., Mike Piazza inducted into Baseball Hall of Fame - ESPN
Mike Piazza Reflects On Post 9/11 HR, Just Didn't Want To Screw Up
May 16, 1998: Mike Piazza's Marlins debut overshadowed by Mark McGwire's impressive home run – Society for American Baseball Research
Mike Piazza, Chipper Jones + others remember Piazza's post 9/11 HR, 9/11: The Mets Remember
Mike Piazza with the NY Mets - Mets History
Mike Piazza hits his 400th career home run
Italian Coaches Convention – mlbblogger
Mike Piazza hits his 400th career home run
Mike Piazza's emotional post-9/11 home run Relive that unforgettable night in Queens