Okla. Stat. tit. 19, § 570

The office of county surveyor is hereby abolished. All aerial photographs, maps, plats, field notes, drawings, specifications, other survey data and records, which can be used to locate, identify or reference survey monuments and property corners, not constituting the personal property of any county surveyor, shall be transferred to the custody of the county clerk of the county, and shall become a part of the official records of that office.