Section 15 was comprised of provisions of act Feb. 23, 1917, ch. 114, § 7, 39 Stat. 933; Ex. Ord. No. 6166, § 15, June 10, 1933; June 26, 1934, ch. 756, § 2, 48 Stat. 1225; 1939 Reorg. Plan No. I, §§ 201, 204, eff. July 1, 1939, 4 F.R. 2728, 53 Stat. 1424; 1953 Reorg. Plan No. 1, §§ 5, 8, eff. Apr. 11, 1953, 18 F.R. 2053, 67 Stat. 631; Oct. 17, 1979, Pub. L. 96–88, title III, § 301, title V, § 507, 93 Stat. 677, 692, which authorized appropriations of $200,000 annually to the Department of Education for studies, investigations and reports and paying salaries of personnel necessary to administer this chapter, and act Oct. 6, 1917, ch. 79, § 1, 40 Stat. 345, which authorized use of that appropriation also for printing and binding, law books, books of reference and periodicals, and postage on foreign mail. Section 7 of act Feb. 23, 1917, was repealed by Pub. L. 105–33, title VI, § 6201, Aug. 5, 1997, 111 Stat. 653.

Sections 15a to 15c, act Feb. 5, 1929, ch. 153, §§ 1–3, 45 Stat. 1151, appropriated money to be used for further development of vocational education in States and Territories but appropriations were authorized for only four years after the fiscal year ending June 30, 1930.

Sections 15d to 15g, act May 21, 1934, ch. 324, §§ 1–4, 48 Stat. 792, provided for further development of vocational education in several States and Territories by authorizing additional appropriations for the fiscal years 1935–37.

Act June 8, 1936, ch. 541, § 7, 49 Stat. 1490, incorporated in section 15o of this title, provided that appropriations authorized by act June 8, 1936, incorporated in sections 15h to 15p of this title, “shall be in lieu thereof and not in addition to the appropriations authorized in” sections 1 and 2 of act May 21, 1934.