1865 - Four people were hanged in Washington, DC, after being convicted of conspiring with John Wilkes Booth to assassinate U.S. President Lincoln.
1917 - Aleksandr Kerensky formed a provisional government in Russia.
1937 - Japanese forces invaded China.
1946 - Mother Frances Xavier Cabrini was canonized as the first American saint.
1999 - In Sierra Leone, President Ahmad Tejan Kabbah and rebel leader Foday Sankoh signed a pact to end the nation's civil war.
2000 - Amazon.com announced that they had sold almost 400,000 copies of "Harry Potter and The Goblet of Fire," making it the biggest selling book in e-tailing history.
2005 - In London, at least 66 people were killed and at least 700 were injured when several bombs were set off in subway cars and double-decker buses.