1. On September 23, 1924, Louisiana governor (and future US Senator) Huey P. Long announced his candidacy for governor in the upcoming election. Long was known for his populist policies and his ability to appeal to working-class voters, and he went on to win the election in a landslide.

2. The Louisiana Purchase was officially signed on September 23, 1803, doubling the size of the United States and paving the way for the westward expansion that defined much of American history. Louisiana was eventually admitted as a state in 1812.

3. In September 23, 1969, nine black students were the first to integrate Louisiana State University (LSU). The students faced significant resistance and hostility, but their perseverance paved the way for greater integration and equality in higher education in the state.

4. On September 23, 1779, the city of Baton Rouge was captured by Spanish forces during the American Revolutionary War. The Spanish maintained control of the city until it was returned to France in 1810, and then to the United States in 1812.

5. Louisiana's state constitution was adopted on September 23, 1921. The constitution remains in effect today, and it has been amended numerous times over the years to reflect changing social and political realities in the state.