1. On June 8, 1974, the infamous tornado outbreak occurred in Oklahoma. The outbreak consisted of 29 separate tornadoes that struck across the entire state, resulting in 22 fatalities and over 400 injuries.

2. June 8, 1996, marked the opening of the Chickasaw National Recreation Area's new exhibit center in Sulphur. The center provides educational exhibits and information on the park's history and natural resources.

3. In 1923, the annual Oklahoma Highway Patrol inspection occurred on June 8. The OHP was established in 1937 and is responsible for enforcing state laws on Oklahoma's highways and interstates.

4. Oklahoma native and film actor Ed Harris was born on June 8, 1950. Harris has starred in numerous films and television shows, including "Apollo 13," "The Truman Show," and "Westworld."

5. On June 8, 1917, the United States Army established Camp Doniphan in Oklahoma. The camp was named after General Alexander Doniphan, who served in the Mexican–American War and the American Civil War. It was used as a training center during World War I and was later converted to Fort Sill.