25 U.S. Code § 404 - Sale on petition of allottee or heirs
The lands, or any part thereof, allotted to any Indian, or any inherited interest therein, which can be sold under existing law by authority of the Secretary of the Interior, except the lands in Oklahoma and the States of Minnesota and South Dakota, may be sold on the petition of the allottee, or his heirs, on such terms and conditions and under such regulations as the Secretary of the Interior may prescribe; and the lands of a minor, or of a person deemed incompetent by the Secretary of the Interior to petition for himself, may be sold in the same manner, on the petition of the natural guardian in the case of infants, and in the case of Indians deemed incompetent as aforesaid, and of orphans without a natural guardian, on petition of a person designated for the purpose by the Secretary of the Interior. When any Indian who has received an allotment of land dies before the expiration of the trust period, the Secretary of the Interior shall ascertain the legal heirs of such Indian, and if satisfied of their ability to manage their own affairs shall cause to be issued in their names a patent in fee simple for said lands; but if he finds them incapable of managing their own affairs, the land may be sold as hereinbefore provided:
For transfer of functions of other officers, employees, and agencies of Department of the Interior, with certain exceptions, to Secretary of the Interior, with power to delegate, see Reorg. Plan No. 3 of 1950, §§ 1, 2, eff. May 24, 1950, 15 F.R. 3174,64 Stat. 1262, set out in the Appendix to Title 5, Government Organization and Employees.
Special provisions for sale of interests of Indian minors in lands of the Yakima Indian reservation, in the State of Washington, whether by direct allotment or by inheritance, were made by act Mar. 27, 1908, ch. 107, 35 Stat. 49.