Missouri Vital Records

Missouri Death Certificates (free)
The Missouri Death Certificate Database, containing death records created after 1910 and over 50 years old, makes that information available online through a searchable index that links to a digitized image of the original death certificate.

Missouri Birth & Death Certificates - pre-1910 (free)
The Missouri Birth and Death Records Database is an abstract of the birth, stillbirth, and death records recorded before 1909 and that are available on microfilm at the Missouri State Archives.