1. Oklahoma Statehood Day: February 11, 1907, marks the day when Oklahoma became the 46th state in the United States. The territory had previously been known as Indian Territory and had a long and complex history of Native American sovereignty and government.

2. Lake Texoma Creation: On February 11, 1944, the construction of Lake Texoma was authorized by the Red River Compact, which was a treaty between the states of Oklahoma and Texas. The lake is now a popular destination for fishing, boating, and water recreation.

3. First African American State Senator: On February 11, 1921, Dr. Charles N. Haskell Jr. became the first African American to serve in the Oklahoma State Senate. He was a physician and a prominent member of the black community in Tulsa.

4. Tulsa Race Massacre Lawsuit: On February 11, 2021, a group of survivors of the 1921 Tulsa Race Massacre filed a lawsuit seeking reparations from the city of Tulsa and local businesses. The lawsuit alleges that the city and its institutions were complicit in the destruction of the Greenwood District, a prosperous African American community, during the massacre.

5. Land Run Day: February 11, 1889, was the first of several days on which land was opened for settlement in what would become Oklahoma. Tens of thousands of settlers rushed in to stake their claims, leading to the rapid development of towns and cities throughout the new territory.