The United States declares its independence, an "Iron Horse" retires, the Beach Boys hit No. 1 for the first time, and we lose three presidents, all on this day.
2009: The Statue of Liberty's crown reopens to the public after eight years, due to security concerns following the World Trade Center attacks.
July 23 is National Hot Dog Day! Learn more about the tasty food, from where it originated from to what it's made of.