1. On March 23, 1935, the first meeting of the Missouri Conservation Commission was held. The Commission was established to promote the conservation, protection, and propagation of fish, game, and wildlife resources within the state of Missouri.

2. On March 23, 1821, Missouri became the 24th state to join the Union. This was a historic moment for the state as it marked the end of the Missouri Territory and the beginning of a new era of self-governance.

3. On March 23, 1944, the famous American novelist and short-story writer, Nathaniel West died in a car accident while travelling to Los Angeles. He was best known for his works that explore the darker aspects of American life and culture, such as The Day of the Locust and Miss Lonelyhearts.

4. On March 23, 1962, the University of Missouri basketball team won its first ever Big Eight Conference championship. The team went on to compete in the NCAA tournament that year, making it to the Elite Eight before losing to Cincinnati.

5. On March 23, 2006, the final episode of the popular teen drama television series, One Tree Hill, aired on the CW network. The show was set in the fictional town of Tree Hill, North Carolina, but was filmed primarily in Wilmington, North Carolina, with some scenes shot in Missouri.