1. On October 7, 1939, Oklahoma celebrated its first "Navy Day" to honor the servicemen and women who serve in the United States Navy. The observance has since become an annual tradition in the state.

2. In 1949, the Oklahoma City Dodgers made history by winning their first National League pennant. Despite losing the World Series to the New York Yankees, the team's success helped boost baseball's popularity in the state.

3. On October 7, 1966, the Oklahoma City Thunder played their first game as a member of the NBA. The team's inaugural season was marked by struggles on the court, but they would eventually become a powerhouse in the league.

4. In 1998, Oklahoma State University celebrated the grand opening of the Sam Noble Oklahoma Museum of Natural History. The museum houses a vast collection of fossils, artifacts, and specimens from the natural world, and is one of the state's premier cultural institutions.

5. On October 7, 2001, Oklahoma saw one of its worst natural disasters when an F4 tornado struck the town of Lone Grove. The tornado caused significant damage to homes and businesses and resulted in the deaths of eight people. The community rallied together to support those affected by the disaster and rebuild in the aftermath.