Okla. Stat. tit. 10, § 10-7508-1.1: Records retention

A. All records of any adoption finalized in this state shall be

maintained for ninety-nine (99) years by the child-placing agency,

entity, organization or person arranging or facilitating the

adoption.

B. Child-placing agencies, attorneys, or other entities that

facilitate adoptions who cease to operate or to practice in this

state shall transfer their adoption records to the Department of

Human Services, Adoption Division, or, after giving notice to the

Department of Human Services, to a transferee agency that is

assuming responsibility for the preservation of the agency's

adoption records.