Okla. Stat. tit. 60, § 60-122: Exceptions

This article shall not apply to lands now owned in this state by

aliens so long as they are held by the present owners, nor to any

alien who is or shall take up bona fide residence in this state: and

any alien who is or shall become a bona fide resident of the State

of Oklahoma shall have the right to acquire and hold lands in this

state upon the same terms as citizens of the State of Oklahoma

during the continuance of such bona fide residence of such alien in

this state: Provided, that if any such resident alien shall cease to

be a bona fide inhabitant of this state, such alien shall have five

(5) years from the time he ceased to be such bona fide resident in

which to alienate such lands.