1999: No Piazza, no problem - Amazin' Avenue
Mike Piazza, with one swing, gave grieving city a moment to rejoice after 9/ 11 – New York Daily News
Mike Piazza – Society for American Baseball Research
20 years later, the enduring legacy of the Mike Piazza home run - ESPN
Remembering 9/11- Mike Piazza Home Run
Mike Piazza recalls first Mets game in NYC after 9/11
Mike Piazza, with one swing, gave grieving city a moment to rejoice after 9/ 11 – New York Daily News
20 years later, the enduring legacy of the Mike Piazza home run - ESPN
A look back on Mike Piazza's 9/11 home run - TSJ101 Sports!
Mike Piazza's post-9/11 home run lifted New York, nation
Near 10th anniversary of 9/11 terrorist attacks, former Met Mike Piazza recalls emotional home run – New York Daily News
Piazza reflects on 9/11 and 9/21 home run - Newsday
Steve Karsay on Mike Piazza's post-9/11 home run