April 11, 1471: Wars of the Roses: King Edward IV of England seizes London from Henry VI.
April 12, 1811: 1st US colonists on Pacific coast arrive at Cape Disappointment, Washington.
April 13, 1860: 1st Pony Express reaches Sacramento, California.
April 14, 1865: US President Abraham Lincoln is shot in the head by John Wilkes Booth at Ford's Theater in Washington; he dies a day later.
April 15, 1896: 1st modern Summer Olympic Games close in Athens, Greece; USA wins gold medal count, 11; Greece wins total medal count, 46; IOC has retroactively assigned gold, silver & bronze medals to 3 best placed athletes in each event.
April 16, 1922: Annie Oakley sets women's record by breaking 100 clay targets in a row.
April 17, 1817: 1st US school for deaf (Hartford, Connecticut).