Editorial Notes Codification Section, act Oct. 12, 1949, ch. 680, title I, 63 Stat. 785 , related to exchange of old freight carrying vehicles as part payment for new, was from the Interior Department Appropriation Act, 1950 , and was not repeated in subsequent appropriation acts. Similar provisions were contained in the following prior appropriation acts: June 29, 1948, ch. 754, 62 Stat. 1133 . July 25, 1947, ch. 337, 61 Stat. 477 . July 1, 1946, ch. 529, 60 Stat. 369 . July 3, 1945, ch. 262, 59 Stat. 343 . June 28, 1944, ch. 298, 58 Stat. 491 . July 12, 1943, ch. 219, 57 Stat. 477 . July 2, 1942, ch. 473, 56 Stat. 537 . June 28, 1941, ch. 259, 55 Stat. 339 . June 18, 1940, ch. 395, 54 Stat. 439 . May 10, 1939, ch. 119, 53 Stat. 719 . May 9, 1938, ch. 187, 52 Stat. 325 . Aug. 9, 1937, ch. 570, 50 Stat. 598 . June 22, 1936, ch. 691, 49 Stat. 1785 . May 9, 1935, ch. 101, 49 Stat. 200 . Mar. 2, 1934, ch. 38, 48 Stat. 382 . Feb. 17, 1933, ch. 98, 47 Stat. 846 . Apr. 22, 1932, ch. 125, 47 Stat. 118 . Feb. 14, 1931, ch. 187, 46 Stat. 1147 . May 14, 1930, ch. 273, 46 Stat. 310 . Mar. 4, 1929, ch. 705, 45 Stat. 1594 . Mar. 7, 1928, ch. 137, 45 Stat. 231 . Jan. 12, 1927, ch. 27, 44 Stat. 961 . May 10, 1926, ch. 277, 44 Stat. 486 . Mar. 3, 1925, ch. 462, 43 Stat. 1172 . June 5, 1924, ch. 264, 43 Stat. 419 . Jan. 24, 1923, ch. 42, 42 Stat. 1208 . May 24, 1922, ch. 199, 42 Stat. 586 .