September 14th, 1901 – President of the United States William McKinley dies after an assassination attempt on September 6th, and is succeeded by Theodore Roosevelt. President McKinley is one of four sitting Presidents to be killed by assassinations, the others being Abraham Lincoln, James Garfield, and John F. Kennedy. Although McKinley’s name doesn’t carry the same weight as Lincoln’s or Kennedy’s, his murder left at least one significant legacy: the 1901 reorganization of the Secret Service into a dedicated Presidential security agency.

US history buffs may want to check out our interactive map of Presidential Burial Sites, which, in addition to showing the locations of all current and planned Presidential gravesites, has some interesting facts about each one.