[S3303] Ancestry.com, 1870 United States Federal Census, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2009;), Year: 1870; Census Place: Clay, Clark, Missouri; Roll: M593_769; Page: 474B; Image: 200; Family History Library Film: 552268.
Record for Mary Montgomery http://search.ancestry.com/cgi-bin/sse.dll?db=1870usfedcen&h=418679&indiv=try