[S3303] Ancestry.com, 1870 United States Federal Census, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2009;), Year: 1870; Census Place: Marshall Ward 1, Calhoun, Michigan; Roll: M593_667; Page: 698B; Image: 221; Family History Library Film: 552166.
Record for Mary R Montgomery http://search.ancestry.com/cgi-bin/sse.dll?db=1870usfedcen&h=27330238&indiv=try