Tex. Nat. Res. Code § 151.006
This subchapter does not apply to the sale of:
Acts 1977, 65th Leg., p. 2646, ch. 871, art. I, Sec. 1, eff. Sept. 1, 1977. Renumbered from Sec. 151.046 and amended by Acts 2001, 77th Leg., ch. 532, Sec. 1, eff. Sept. 1, 2001.