12 U.S.C. § 931
Section, acts July 17, 1916, ch. 245, title I, §26, 39 Stat. 380; Aug. 18, 1959, Pub. L. 86-168, title I, §104(h), 73 Stat. 387, exempted land banks and land bank associations from taxation and directed that mortgages and bonds be deemed instrumentalities of government. See section 2055 of this title.