1. On May 11, 1904, the city of Enid was officially incorporated in Oklahoma Territory.

2. On May 11, 1910, renowned Cherokee lawyer and politician William C. Rogers was born in Claremore. Rogers served as the first Native American to be appointed as United States attorney general in 1957.

3. May 11, 1933, saw the birth of songwriter and musician Ben E. King in Henderson, North Carolina. King is best known for his hit songs "Stand by Me" and "Spanish Harlem."

4. On May 11, 1973, the Oklahoma City Thunder NBA team was officially founded, originally known as the Seattle SuperSonics. The team moved to Oklahoma City in 2008.

5. On May 11, 2010, the town of Piedmont, Oklahoma was devastated by an EF4 tornado, causing widespread damage and claiming the lives of eight people. The tornado was part of a larger outbreak that affected several states across the Midwestern and Southern United States.