August 3, 1460 - James II, King of Scotland, died after being injured by an exploding cannon at Roxburgh Castle.
August 3, 1492 - Christopher Columbus sets sail from Spain.
August 3, 1553 - Mary I enters London to be greeted as the new Queen. She rode with her half-sister Elizabeth.
August 3, 1934 - Adolf Hitler becomes the supreme leader of Germany. He combined the offices of President and Chancellor.