Mo. Rev. Stat. § 28.090: To make copies of official acts.

He shall make out and deliver to every person requiring the same copies of any act, resolution, order of the general assembly, commission or other official act of the governor, roll, record, document, paper, bond or recognizance, deposited in his office by law, and shall certify such copies, under his hand, and affix thereto the seal of his office; and such copies shall be admitted as evidence in all courts of this state.