President John F. Kennedy was assassinated on November 22, 1963, in Dallas, Texas. He was 46 years old.
President Ulysses S. Grant died of throat cancer on July 23, 1885, in Mount McGregor, New York. He was 63 years old.
President Theodore Roosevelt died of coronary thrombosis on January 6, 1919, in Oyster Bay, New York. He was 60 years old.