1. The Battle of the Mounds occurred on December 28, 1863, in Shannon County, Missouri during the American Civil War. Confederate forces were repelled by Union troops in a bloody skirmish that left over 200 dead or wounded.

2. On December 28, 1908, the St. Louis Browns baseball team signed a deal to build a new stadium near the intersection of Grand Boulevard and Dodier Street. The stadium, which would later be renamed Sportsman's Park, would serve as the team's home for over 50 years.

3. In 1941, the Missouri State Capitol in Jefferson City completed a major renovation project on December 28. The project included the installation of a new heating system, modernized elevators, and updated plumbing.

4. On December 28, 1982, Missouri Governor Christopher S. Bond signed a bill creating the Missouri Lottery. The first drawing was held on January 20, 1986, and has since raised millions of dollars for various state programs.

5. The Great Flood of 1993 reached its peak on December 28, affecting much of Missouri and the surrounding region. The flood caused over $15 billion in damages and claimed the lives of 50 people. The disaster spurred major changes in flood management and prevention efforts in Missouri and beyond.