(Aug. 19, 1890, ch. 806, §§ 1–11, 26 Stat. 333–336; Mar. 3, 1891, ch. 542, 26 Stat. 978; Feb. 26, 1896, ch. 33, 29 Stat. 21; June 4, 1897, ch. 2, § 1, 30 Stat. 43; Apr. 15, 1926, ch. 146, title II, 44 Stat. 289; Feb. 23, 1927, ch. 167, title II, 44 Stat. 1140; Ex. Ord. No. 6166, § 2, June 10, 1933; Ex. Ord. No. 6228, § 1, July 28, 1933.)