Section, Pub. L. 86–523, § 4, as added Pub. L. 93–291, § 1(3), May 24, 1974, 88 Stat. 174, related to survey by Secretary of the Interior for preservation of data. See section 312503 of Title 54, National Park Service and Related Programs.

A prior section 4 of Pub. L. 86–523 was renumbered section 7 and was classified to section 469c of this title prior to repeal by Pub. L. 113–287.