Section, acts June 16, 1933, ch. 98, title I, 6, 48 Stat. 259; Aug. 6, 1953, ch. 335, 11, 67 Stat. 395; July 26, 1956, ch. 741, title I, 105(e), 70 Stat. 665; Oct. 17, 1968, Pub. L. 90–582, § 2(a), 82 Stat. 1145, covered purchase of stock of production credit associations and payment, retirement, and cancellation of stock. See section 2094 of this title.