"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDSJ-6NB : 12 April 2016), Olive Canfield in household of Edward S Canfield, Massachusetts, United States; citing p. 22, family 181, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,101.
Find A Grave, database and images (https://www.findagrave.com : accessed 17 May 2019), memorial page for Olive Lodamy Barber Canfield (19 Apr 1819–29 Mar 1900), Find A Grave: Memorial #71427776, citing Huxley Cemetery, New Marlborough, Berkshire County, Massachusetts, USA ; Maintained by Jan Canfield (contributor 46940640) .