1. Louisiana State University (LSU) was chartered on April 23, 1874, as Louisiana State Seminary of Learning and Military Academy. Today, LSU is one of the largest universities in the state, offering a wide range of undergraduate and graduate programs.

2. The Louisiana Purchase was signed on April 23, 1803, which resulted in the United States acquiring nearly 828,000 square miles of land from France, including what is now Louisiana, Arkansas, Missouri, Iowa, Minnesota, North Dakota, South Dakota, Montana, Wyoming, Nebraska, Colorado, and parts of Kansas, Oklahoma, and Texas.

3. On April 23, 1964, the first jazz festival in the United States was held in New Orleans. The festival, known as the New Orleans Jazz & Heritage Festival, is still held annually in late April and early May, featuring both local and national musicians and artists.

4. Louisiana's state bird, the brown pelican, was designated on April 23, 1966. The pelican, which is known for its large beak and distinctive pouch, is widely found along Louisiana's coastal areas and has become an unofficial symbol of the state.

5. On April 23, 1928, Huey P. Long was elected as the governor of Louisiana. Long, who served from 1928 to 1932, is known for his populist policies and his "Share Our Wealth" program, which aimed to redistribute wealth from the rich to the poor. Long was assassinated in 1935, but his legacy continues to influence Louisiana politics to this day.