Mo. Rev. Stat. § 446.030: Surveyor — duties — fees.

He shall cause to be planted, by the person requiring such survey, at each corner desired to be established, a stone or post, and shall mark and describe witness trees, if within a reasonable distance, noting in his field notes the course and distance to them; he shall note also the names of his chainmen, flagmen and other persons present at the planting of any corner stone or post; and he shall record a copy of his field notes in a book to be kept by him for that purpose, and certify the same, and shall deliver a certified copy of such field notes to any person requiring it, for which copy he shall receive at the rate of fifteen cents for every hundred words.