claim: The largest county in Oklahoma by area gets its name from the broad rolling hills and rolling tallgrass prairie and Cross Timbers encompassing the county and surrounding areas to the north - including portions of Mayes, Tulsa, Washington and Kay Counties - and was created in 1907.
supporting_facts.key: Osage Hills
supporting_facts.key: Osage Hills
supporting_facts.key: Osage County, Oklahoma
supporting_facts.key: Osage County, Oklahoma