Missouri Revised Statutes Title XXVIII. Contracts and Contractual Relations § 432.080. Duplicate copies to be made and preserved

In every case of contract entered into by any county, city, town, village, school township, school district or other municipal corporation, or by any officer or agent on their behalf, duplicate copies of the same shall be executed as above provided, one of which shall be filed in the office of the clerk of the county commission of the proper county, or in such office or with such officer of the city, town, village, school township, school district or other municipal corporation as may be charged with the keeping of the contracts thereof, and shall not be taken thence except to be used for the purposes of evidence in some legal matter or cause; and in case of variance between such copies, the one on file shall control in the construction of the contract.