1. The Louisiana Purchase Treaty was ratified on May 6, 1803. This agreement between the United States and France allowed the U.S. to acquire the Louisiana Territory for $15 million, doubling the size of the country.

2. On May 6, 1882, the first streetcar line in New Orleans began operation. The St. Charles Avenue line is still in operation today and is the oldest continuously operating streetcar line in America.

3. In 1960, the first African-American to graduate from Louisiana State University (LSU) Law School, Charles L. Jones, earned his degree on May 6.

4. The deadliest tornado in Louisiana history occurred on May 6, 1934. The tornado touched down in Bienville Parish and traveled over 200 miles, causing widespread destruction and claiming 23 lives.

5. May 6, 2013, was the date of the final episode of the hit HBO series "Treme," which was set in post-Katrina New Orleans and focused on the city's unique culture and music scene. The show was critically acclaimed and helped to bring attention to the ongoing recovery efforts in New Orleans.