16 U.S. Code § 281e - Contracts and cooperative agreements with State of Idaho, and others
In order to carry out the purpose of this subchapter, the Secretary of the Interior may contract and make cooperative agreements with the States of Idaho, Oregon, Washington, Montana, Wyoming, their political subdivisions or agencies, corporations, associations, the Nez Perce Tribe, or individuals, to protect, preserve, maintain, or operate any site, object, or property included within the Nez Perce National Historical Park, regardless of whether title thereto is in the United States:
To facilitate the interpretation of the Nez Perce country the Secretary is authorized to erect and maintain tablets or markers in accordance with the provisions contained in the Act approved August 21, 1935, entitled “An Act to provide for the preservation of historic American sites, buildings, objects, and antiquities of national significance, and for other purposes” (49 Stat. 666).
The Secretary shall consult with officials of the Nez Perce Tribe on the interpretation of the park and its history.
 See References in Text note below.
The Act approved August 21, 1935, entitled “An Act to provide for the preservation of historic American sites, buildings, objects, and antiquities of national significance, and for other purposes” (49 Stat. 666), referred to in subsec. (b), is act Aug. 21, 1935, ch. 593, 49 Stat. 666, known as the Historic Sites Act of 1935 and also as the Historic Sites, Buildings, and Antiquities Act, which enacted sections 461 to 467 of this title. The Act was repealed and restated as section 1866(a) of Title 18, Crimes and Criminal Procedure, and sections 102303 and 102304 and chapter 3201 of Title 54, National Park Service and Related Programs, by Pub. L. 113–287, §§ 3, 4(a)(1), 7, Dec. 19, 2014, 128 Stat. 3094, 3260, 3272. For complete classification of this Act to the Code, see Tables. For disposition of former sections of this title, see Disposition Table preceding section 100101 of Title 54.