Missouri Birth and Death Database, pre-1910: Birth and death records were not required to be registered in Missouri until 1910. Try the Missouri Digital Heritage to find all known surviving pre-1910 birth and death records in Missouri.
Missouri Death Records, post-1910: Do you have ancestors that died in Missouri? Try the Missouri Digital Heritage to find them. Available online are death certificates after 1910. The law provides for death certificates to become public domain 50 years after the person is deceased. Each year the State of Missouri adds a full year’s worth of death certificates to the online database.
Knox County Historical Society and Museum 