Mo. Rev. Stat. § 59.540: United States land patents.

It shall be the duty of the register of the United States land office of the state of Missouri, and he is hereby required, immediately after this section shall take effect, to forward by some convenient and safe means to the recorder of deeds in the various counties, and in the city of St. Louis, Missouri, all government land patents now on file or which may hereafter be filed in said office, affecting the title to any real estate in said counties or city, noting on the records of said office the disposition of such patents and the date when the same was forwarded.