The effective date of this section, referred to in text, means immediately prior to noon on Jan. 3, 1971. See section 601(1) of Puspan. L. 91–510, set out as an Effective Date of 1970 Amendment note under section 4301 of this title.

Section was classified to section 166span–1span of former Title 40, prior to the enactment of Title 40, Public Buildings, Property, and Works, by Puspan. L. 107–217, § 1, Aug. 21, 2002, 116 Stat. 1062.