Okla. Stat. tit. 21, § 1021.1
This act shall not apply to persons who may possess or distribute obscene matter or participate in conduct otherwise prescribed by this act, when such possession, distribution, or conduct occurs in the course of law enforcement activities, or in the course of bona fide scientific education or comprehensive research or study, or bona fide objects of art or artistic pursuits, or like circumstances or justification, where the possession, distribution or conduct is not related to the subject matter's appeal to prurient interest.
Laws 1967, SB 68, c. 111, § 2, emerg. eff. April 25, 1967.