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.