1. In 1808, Missouri's first governor, Alexander McNair, was born in Mifflin County, Pennsylvania. He served as governor from 1820 to 1824, and was the first governor elected under the Missouri constitution.

2. In 1902, Carrie Nation, a temperance advocate famous for her "hatchetations" (smashing up bars with a hatchet), visited Joplin, Missouri. Nation was known for her radical tactics and was arrested multiple times for her actions.

3. The Missouri Pacific Railroad, which played a significant role in the state's development, was founded on September 23, 1861. The company was one of the largest railroads in the United States and was instrumental in the transportation of both passengers and goods.

4. On September 23, 1826, the first edition of the St. Louis Observer was published. The newspaper was known for its strong religious and anti-slavery views, and played an important role in shaping public opinion in St. Louis and the surrounding area.

5. In 1822, Missouri's first state fair was held in St. Louis. The fair was designed as a showcase for the state's agricultural and industrial products, and included events such as livestock exhibitions and horse races. Today, the Missouri State Fair is held annually in Sedalia and has evolved to include carnival rides, concerts, and other entertainment.