25 U.S. Code § 375 - Determination of heirship of deceased members of Five Civilized Tribes
A determination of the question of fact as to who are the heirs of any deceased citizen allottee of the Five Civilized Tribes of Indians who may die or may have heretofore died, leaving restricted heirs, by the probate court of the State of Oklahoma having jurisdiction to settle the estate of said deceased, conducted in the manner provided by the laws of said State for the determination of heirship in closing up the estates of deceased persons, shall be conclusive of said question:
Act June 30, 1919, ch. 4, § 18, 41 Stat. 21, appropriated $205,000 for expenses of administration of the affairs of the Five Civilized Tribes, Oklahoma, and the compensation of employees, prohibited any part of the appropriation from being used in forwarding the undisputed claims to be paid from individual moneys of restricted allottees, or their heirs, or in forwarding uncontested agricultural and mineral leases (excluding oil and gas leases) made by individual restricted Indian allottees, or their heirs, to the Secretary of the Interior for approval, provided that all such undisputed claims or uncontested leases (except oil and gas leases) required to be approved under existing law by the Secretary of the Interior shall be paid, approved, rejected or disapproved by the Superintendent for the Five Civilized Tribes of Oklahoma and authorized an appeal within thirty days by party aggrieved by any decision or order of the Superintendent for the Five Civilized Tribes of Oklahoma to the Secretary of the Interior.