NYPD' helmet worn by Mike Piazza after 9/11 now on auction block - ESPN - Mets Blog- ESPN
Mike Piazza's father upset his son's 9/11 jersey won't go to the Hall of Fame
Piazza jersey from first game after 9/11 continues to inspire
Anniversary of 9/11 attacks reminds us of the healing power of sports - ESPN
EXCLUSIVE: Mike Piazza's game jersey headed to 9/11 Memorial & Museum – New York Daily News
NY exhibit explores sports' role after 9/11
Post-9/11 Piazza Mets Jersey on Display at 9/11 Memorial Museum
Piazza 9/11 Jersey: The Story From The Original Owner
Autographed Mets 9/11 Memorial Jersey - Mets History
I saw Mike Piazza's 9/21 jersey at the 9/11 Memorial and got teary eyed when I explained its significance to my wife. Damn onions. LGM. : r/NewYorkMets
Post-9/11 Mike Piazza Jersey Sells, to be Displayed Publically - Sports Collectors Digest
Mets, Yankees and more pay tribute on 9/11 20th anniversary
EXCLUSIVE: Mike Piazza's game jersey headed to 9/11 Memorial & Museum – New York Daily News
EXCLUSIVE: Mets sold off many game-worn jerseys from first game after 9/11 attacks to mystery buyer – New York Daily News