How do I find free land ownership records since the Louisiana Purchase for Missouri?

Dear Mr. Gibson,

Thank you for using History Hub. The National Archives facility in Kansas City, Missouri may be able to help.

Here is its website: https://www.archives.gov/kansas-city

Contact the reference staff at kansascity.archives@nara.gov for further information.

Best of luck in your research!

See also:  https://www.sos.mo.gov/archives/resources/land and https://s1.sos.mo.gov/records/archives/archivesdb/land/  for state level resources.  You should also contact the county government with jurisdiction over the land.

This provides an outline of some of the resources available:  https://www.familysearch.org/wiki/en/Missouri_Land_and_Property