Mo. Rev. Stat. § 214.300
Any cemetery operator may, after October 13, 1961, qualify to operate a cemetery which has been operated as a nonendowed cemetery for a minimum of two years, as an endowed care cemetery by:
(L. 1961 p. 538 § 12, A.L. 1994 S.B. 496, A.L. 2010 H.B. 1692, et al. merged with H.B. 2226, et al. merged with S.B. 754)