Four Presidents have died by natural causes, Harrison, Taylor, Harding and Roosevelt. Four Presidents have been assassinated, Lincoln, Garfield, Mckinley and Kennedy.

William Henry Harrison [1841] died of pneumonia on April 4, 1841, the shortest presidency in the United States.

Zachary Taylor [1848-1850] died of gastroenteritis on July 9, 1850.

Warren G. Harding [1921-1923] died of a heart attack on August 8, 1923.

Franklin Delano Roosevelt [1933-1945] died of a cerebral hemorrhage on April 12, 1945

Abraham Lincoln [1861-1865] shot by John Wilkes Booth on April 14, 1865.

James A. Garfield [1881] was shot by Charles J Guteau on July 2, 1881 and died from those wounds on September 19, 1881.

William McKinley [1897-1901] shot by Leon Czolgosz on September 6, and died on September 14, 1901.

John Fitzgerald Kennedy [1961-1963] shot in Dallas, Texas on November 23, 1963 by Lee Harvey Oswald.