Okla. Stat. tit. 59, § 567.15
The Board may issue temporary licenses to nurses from other states upon proper application stating the purpose of said licenses; provided no temporary license may be issued for more than ninety (90) days. Temporary license may be renewed at the discretion of the Board but shall not extend over a period longer than one (1) year.
Laws 1953, HB 738, p. 271, § 15, emerg. eff. April 13, 1953.