1. In 1861, the Battle of Carthage was fought in southwest Missouri, which was one of the first formal battles of the American Civil War west of the Mississippi River.

2. On July 6, 1944, a fire in the ammunition storage area of the submarine USS Cochino occurred off the coast of Norway. Despite a heroic effort to save the ship, 99 of the crew of 152 men perished, making it one of the worst US submarine disasters ever.

3. In 1957, the iconic Gateway Arch in St. Louis was officially approved by President Dwight D. Eisenhower. The arch was designed by architect Eero Saarinen and is the tallest monument in the United States.

4. In 1987, the deadliest tornado in Missouri history occurred on July 6. The tornado touched down in eastern Jasper County and caused significant damage and loss of life in the town of Sarcoxie.

5. In 2013, the Mississippi River near St. Louis reached its highest level since the historic floods of 1993. The flooding caused significant damage to riverfront communities and prompted evacuations in some areas.