9/11 : r/NewYorkMets
New York Yankees - Wikipedia
Mets-Yankees hold 9/11 ceremony honoring first responders
Bill_de_Blasio
9/11 tributes in football, baseball – Orange County Register
New York Amsterdam News Issue Aug.3-9, 2023 by AmsterdamNews - Issuu
Peter Dreier, Robert Elias - Baseball Rebels - The Players, People, and Social Movements That Shook Up The Game and Changed America-University of Nebraska Press (2022), PDF, American Civil War
The New York Mets in Popular Culture – Society for American Baseball Research
Mets wearing first responder hats for 9/11 game
Yankees, Mets get green light from MLB to wear first-responder caps on 9/11 anniversary