 He also donated significant funds to the Yale University Art Gallery, in New Haven, Connecticut, which both the Seymour H. Knox Jr., Curator of Modern and Contemporary Art and Seymour H. Knox Jr., Curator of European and Contemporary Art positions bear his name.He was an avid polo player and led his Aurora team to the United States Championship in 1932, later touring South America, and winning a tournament in Europe.Knox died on September 27, 1990 and was eulogized in Congress by U.S. Representative Bill Paxon.