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Genealogy Web Archives
http://www.rootsweb.com/~usgenweb/mo/stclair/stclair.htm
St Clair County Missouri.
Missouri Census
http://www.oseda.missouri.edu/mscdc/census/us/basictables/us.text/county/MO/MOSTCLAI
St. Clair County, Missouri.
National Register of Historical Places
http://www.nationalregisterofhistoricplaces.com/MO/St%2E+Clair/state.html
Saint Clair County, Missouri.