Section was formerly classified to section 563 of Title 5 prior to the general revision and enactment of Title 5, Government Organization and Employees, by Pub. L. 89–554, § 1, Sept. 6, 1966, 80 Stat. 378.

A prior section 450b, Pub. L. 89–106, § 2, Aug. 4, 1965, 79 Stat. 431, which related to research grants, duration, records, and audit, was transferred to section 450i of this title.