45 U.S.C. §§ 131 to 146 May 20, 1926, ch. 347, §14, 44 Stat. 587 Section 131, act Feb. 28, 1920, ch. 91, §300, 41 Stat. 469, defined terms for purposes of this chapter. See section 151 et seq. of this title. Section 132, act Feb. 28, 1920, ch. 91, §301, 41 Stat. 469, related to disputes between carriers and their officers, agents, and employees. See section 151 et seq. of this title. Section 133, act Feb. 28, 1920, ch. 91, §302, 41 Stat. 469, related to establishment of railroad boards of labor adjustment