Section, added Pub. L. 91–172, title I, § 101(d)(3), Dec. 30, 1969, 83 Stat. 521; amended Pub. L. 94–455, title XIX, § 1906(b)(13)(A), Oct. 4, 1976, 90 Stat. 1834, required an annual report by private foundations having at least $5,000 of assets at any time during a taxable year, prescribed the contents of the report and the form to be used, and provided special rules concerning information to be filed with the report and availability of the report.