Section 460b, acts June 16, 1936, ch. 582, 5, 49 Stat. 1520; June 8, 1938, ch. 328, 8, 52 Stat. 635; Sept. 5, 1940, ch. 715, 9, 54 Stat. 870, related to determination of location of parkways upon public lands, national forests, or other Federal reservations. Section 460c, act Sept. 7, 1950, ch. 912, 4(b), 64 Stat. 787, related to administration of parkway appropriations.