SEC. 22. That the adult heirs of any deceased Indian of either of the Five Civilized Tribes whose selection has been made, or to whom a deed or patent has been issued for his or her share of the land of the tribe to which he or she belongs or belonged, may sell and convey the lands inherited from such decedent; and if there be both adult and minor heirs of such decedent, then such minors may join in a sale of such lands by a guardian duly appointed by the proper United States court for the Indian Territory. And in case of the organization of a minor or minors may reside or in which said real estate is situated, upon an order of such court made upon petition filed by guardian. All conveyances made under this provision by heirs who are full-blood Indians are to be subject to the approval of the Secretary of the Interior, under such rules and regulations as he may prescribe.

      SEC. 23. Every person of lawful age and sound mind may by last will and testament devise and bequeath all of his estate, real and personal, and all interest therein: Provided, That no will of a full-blood Indian devising real estate shall be valid, if such last will and testament disinherits the parent, wife, spouse, or children of such full-blood Indian, unless acknowledged before and approved by a judge of the United States court for the Indian Territory, or a United States commissioner.