For information on the University of Oklahoma's athletic teams, see Oklahoma Sooners.
According to the Oklahoma Historical Society (OHS), the term Sooners came into use in 1889, after the Unassigned Lands were settled in what was the first of the land runs. It was a derogatory term, used to describe settlers who entered the Unassigned Lands before President Harrison officially proclaimed them open to settlement until the Indian Appropriation Act of 1889.
These settlers often fiercely defended their unlawful claims (e.g., the U.S. Supreme Court case of Smith v. Townsend ). The term had negative connotations among the early legal settlers of Oklahoma Territory well into the 20th century.
In 1908, the University of Oklahoma adopted 'Sooners' as the nickname of their football team (after having first tried 'Rough Riders' and 'Boomers'). Within about a decade, the term had mostly lost its association with those who had broken the law and it became what the OHS characterizes as a "badge of pride and progressivism"; eventually (though never officially), the state of Oklahoma became known as "The Sooner State." The term Sooners now primarily refers to the students, fans and alumni, including members of the sports teams, of the University of Oklahoma.
After the Civil War, as white settlers demanded more and more land, the Indian Territory was split, with a western part becoming the Oklahoma Territory. The new territory was reserved for white settlement and gradually opened up to pioneers, section by section, throughout the late 19th century.
"Boomers" was also a term associated with those who observed the official start of land runs and began the race for free land at the sound of the starting boom.
Oklahoma native and Sooners fan, Jim Ross (Good Ol' J.R.) of World Wrestling Entertainment, uses Boomer Sooner as his entrance music when he appears infront of the crowd.
History of Oklahoma | Oklahoma culture | Agriculture in the United States