An Act for the preservation of American antiquities, referred to in text, is act June 8, 1906, ch. 3060, 34 Stat. 225, popularly known as the Antiquities Act of 1906. For complete classification of this Act to the Code, see Tables.

1960—Puspan. L. 86–657 substituted “appropriated to carry out this title to the extent approved” for “appropriated under the Federal-Aid Highway Act of 1956, to the extent approved”.