1755: Washington’s fever and dysentery improved, but he was still too weak to join General Braddock’s main force in the French and Indian Wars.

1826: Thomas Jefferson died.

1826: John Adams died.

1831: James Monroe died.

1850: Zachary Taylor laid the cornerstone of the Washington Memorial and later that day developed the onset of his fatal gastroenteritis.

1872: Calvin Coolidge was born.

1989: Ronald Reagan was thrown from a horse and knocked unconscious.