Okla. Stat. tit. 20, § 1213

In order for this act and the provisions thereof to apply and to be put in force and effect in any county, it shall be necessary for the governing board of the court fund of such county to adopt a resolution to that effect; and when such resolution shall be adopted, this act shall be in full force and effect as to such county, provided that the board of library trustees of such county created by this act is hereby empowered at its discretion to discontinue the operation of this act in said county.