Mo. Rev. Stat. § 473.507
In all public sales of real estate made under this law, the executor or administrator shall cause a notice containing a particular description of the real estate to be sold and the street address or approximate direction and distance from any city or town, and popular name thereof, if any, stating the time, place and terms of sale, to be published once a week for four consecutive weeks prior to the sale in some newspaper. The name of the estate shall be printed in capital letters in the notice. The notice shall be published in accordance with section 472.100 except that the newspaper in which publication is made must be published in the county in which the land is situated, or if there is none, in an adjoining county. Omission of or error in the street address or approximate direction or distance from any city or town or popular name, or any of them, shall not affect the validity of the notice.
§ 473.507, RSMo