Section 64a, act Feb. 21, 1929, ch. 288,
Section 64b, act June 24, 1935, ch. 291, §3,
Provisions of section 64c, which related to use of government automobiles to transport school children at isolated stations, were enacted as permanent legislation by the 1948 amendment to section 227 of this title. Section 64c was based upon the following prior appropriation acts:
June 14, 1948, ch. 465, title II,
July 8, 1947, ch. 210, title II,
July 26, 1946, ch. 672, title II,
July 3, 1945, ch. 263, title II,
June 28, 1944, ch. 302, title II,
July 12, 1943, ch. 221, title II,
July 2, 1942, ch. 475, title II,
July 1, 1941, ch. 269, title II,
June 26, 1940, ch. 428, title II,