1859 – Mark Twain receives steamboat pilot’s license
http://www.history.com/this-day-in-history/mark-twain-receives-steamboat-pilots-license
1865 – Robert E. Lee surrenders
http://www.history.com/this-day-in-history/robert-e-lee-surrenders
1947 – Tornado reduces Oklahoma town to rubble
http://www.history.com/this-day-in-history/tornado-reduces-oklahoma-town-to-rubble
1959 – First astronauts introduced
http://www.history.com/this-day-in-history/first-astronauts-introduced
1962 – Kennedy throws first pitch at new D.C. stadium
http://www.history.com/this-day-in-history/kennedy-throws-first-pitch-at-new-d-c-stadium
2005 – Prince Charles and Camilla Parker Bowles wed
http://www.history.com/this-day-in-history/prince-charles-and-camilla-parker-bowles-wed