36 C.F.R. § 296.18
(a) The Federal land manager shall not make available to the public, under subchapter II of chapter 5 of title 5 of the United States Code or any other provision of law, information concerning the nature and location of any archaeological resource, with the following exceptions:
(2) The Federal land manager shall make information available, when the Governor of any State has submitted to the Federal land manager a written request for information, concerning the archaeological resources within the requesting Governor's State, provided that the request includes:
[49 FR 1027, Jan. 6, 1984; 49 FR 5923, Feb. 16, 1984]