1. On September 18, 1926, the inaugural football game was played at Owen Field in Norman, Oklahoma. The University of Oklahoma Sooners beat the Washington Huskies 20-0 in front of a crowd of 16,000 spectators.

2. In 1906, the Oklahoma Territory Women's Suffrage Association held a convention in Guthrie, Oklahoma on September 18. This was a pivotal moment in the women's suffrage movement in Oklahoma and led to Oklahoma being the first state to grant women the right to vote in primary elections.

3. The first oil well in the Sooner State was drilled on September 18, 1897 near Bartlesville, Oklahoma. The Nellie Johnstone No. 1 well produced 150 barrels a day and sparked an oil boom in the state that lasted for decades.

4. Chickasaw Nation Governor Douglas Johnston was born on September 18, 1856, in Stringtown, Oklahoma. He would go on to lead the Chickasaw Nation for 30 years, overseeing many important constitutional and social changes.

5. On September 18, 2016, the 99th Oklahoma City Streetcar was put into service, marking the completion of the first phase of the OKC Streetcar system. The 4.9-mile route connects Bricktown, downtown, and Midtown Oklahoma City, providing a crucial link for residents and visitors alike.