1. On September 4, 1886, the first Oklahoma State Fair was held in Guthrie, Oklahoma Territory. The fair would continue to be held annually and became a popular event for Oklahomans.

2. In 1952, the first television station in Oklahoma, WKY-TV (now KFOR-TV), began broadcasting. The station's first programming included local news and the popular children's show "Uncle Zeb."

3. September 4, 1995 marked the opening of the Oklahoma City National Memorial, which honors the victims and survivors of the 1995 Oklahoma City bombing. The memorial includes a reflecting pool, a survivor tree, and a museum that tells the story of the tragedy.

4. In 2009, Oklahoma became the 46th state to allow the carrying of concealed weapons. The law, known as the Oklahoma Self-Defense Act, allows people who have completed a training course to carry concealed firearms.

5. On September 4, 2015, the Oklahoma Supreme Court ruled that a Ten Commandments monument on the state capitol grounds was unconstitutional. The monument had been the subject of legal challenges since its installation in 2012.