In addition to baseball related recognitions , the Knights of Columbus donated plaques in honor of the Masses celebrated at Yankee Stadium by Pope Paul VI on October 4 , 1965 ; Pope John Paul II on October 2 , 1979 ; and Pope Benedict XVI on April 20 , 2008 . The Yankees also dedicated a monument to the victims and rescue workers of the September 11 attacks on September 11 , 2002 , the first anniversary of the attacks . The Yankees dedicated a plaque to Nelson Mandela on April 16 , 2014 , to commemorate his life and 1990 visit to Yankee Stadium . On June 25 , 2019 , the Yankees dedicated a plaque commemorating the 50th anniversary of the Stonewall Inn Uprising , which sparked the modern day movement for LGBT rights in the United States
September 11 attacks
September 11 attacks
Monument Park (Yankee Stadium)