1. In 1832, the Treaty of Dancing Rabbit Creek was signed, which resulted in the forced removal of the Choctaw Nation from Mississippi to Indian Territory, present-day Oklahoma.

2. In 1915, the Oklahoma State Capitol building was completed, becoming the first state capitol building in the United States to feature an oil derrick on the grounds.

3. In 1941, the Oklahoma City Tornado Outbreak occurred, resulting in the deadliest tornado outbreak in the state's history. More than 100 people were killed, and hundreds more were injured.

4. In 1954, the University of Oklahoma football team defeated Notre Dame 28-21, marking their first-ever win against the Fighting Irish. This game is still considered one of the greatest victories in OU football history.

5. In 1985, the Oklahoma City Thunder basketball team played their first game as a franchise, losing to the Seattle SuperSonics 106-94. The team would later relocate to become the Oklahoma City Thunder, and win an NBA championship in 2021.