Mo. Rev. Stat. § 445.060
Any recorded plat or plan of any town or city, and of any addition thereto or subdivision thereof, or/and any recorded survey or plat or plan of any town or city and of any addition thereto or subdivision thereof or part of same made by the county surveyor of the county in which said town, city, addition or subdivision is located, which was not properly or fully made, certified or executed or was not properly or fully acknowledged, according to law, at the time of the making, certifying, executing or acknowledgment of same, according to law, but which shows or describes the real estate correctly or in such a manner that the lines of same may or can be laid or located from such plat, plan or survey upon the ground, and has been recorded in the recorder's office or in the records of the surveyor's office of the county in which the law directs it shall be recorded, for ten years, shall have the same force and effect as though properly and fully made, certified, executed or acknowledged, according to law, and shall be received in evidence in all courts of the state, in any cause, and shall be prima facie evidence of the correctness of same and of the showing thereof.
§ 445.060, RSMo
RSMo 1939 § 12806