Emily Johnson Dickerson died at her home in Ada, Okla., last week. She was the last person alive who spoke only the Chickasaw language.
"This is a sad day for all Chickasaw people because we have lost a cherished member of our Chickasaw family and an unequaled source of knowledge about our language and culture," Chickasaw Nation Gov. Bill Anoatubby said in a news release. The Chickasaw Nation has about 55,000 members and is based in the southern part of central Oklahoma.