Today in History: May 14

A look at what happened around the world on May 14th’s of the past.
On this date: 
In 1787, Delegates began gathering in Philadelphia for a convention to draw up the U.S. Constitution.
In 1796, English physician Edward Jenner administered the first vaccination against smallpox.
In 1804, The Lewis and Clark expedition to explore the Louisiana Territory left St. Louis.
In 1904, The first Olympic games to be held in the United States opened in St. Louis
In 1948, the independent stat