Missouri Revised Statutes Title XXIX. Ownership and Conveyance of Property § 445.020. Plat, how drawn--shall show what

Every plat hereafter constructed, which is authorized or required by law to be recorded, or intended to form part of any proceedings for the partition of real estate, shall be drawn to a scale, the scale to be noted on the plat, have written on its face as its title, and show the block, section, United States survey, or part thereof, it purports to represent. If the land platted be less than a whole block, section, or United States survey, the plat shall be corrected in such manner as to show the position of such land relatively to the remainder of the block, section, or United States survey, as the case may be; and if such land be intersected by a quarter-section, section, or United States survey line, such line shall be indicated on the plat and distinguished by suitable words and figures, and shall be done in such manner that the precise location of the land purported to be platted can be determined on inspecting the plat; provided, however, that the provisions of this section shall not apply to any plat issued by authority of the United States, or the state of Missouri.