Okla. Stat. tit. 16, § 16-37a: Foreign acknowledgments validated

All deeds, mortgages, releases, oil and gas leases, powers of

attorney and other instruments of writing for the conveyance or

encumbrance of any lands, tenements, or hereditaments situated

within this state, heretofore executed and acknowledged or proved in

any state, territory, District of Columbia or foreign country in

conformity with the law of such state, territory, District of

Columbia or foreign country, shall be as valid as to execution and

acknowledgment thereof, only, as if executed and acknowledged within

this state in conformity with the provisions of the laws of this

state. Provided this act shall not validate any execution or

acknowledgment fraudulently obtained.