Okla. Stat. tit. 2, § 4-8
Brands in the current edition of the State Brand Book and supplements shall be prima facie evidence of ownership. An owner whose brand does not appear in the State Brand Book or a supplement shall produce evidence to establish title to the property in the event of controversy.
Laws 1955, HB 505, p. 32, art. 4, § 8; Amended by Laws 2000, SB 1402, c. 243, § 33, emerg. eff. May 24, 2000 (superseded document available).