"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MD91-8J6 : accessed 22 May 2016), Mary A Potter in household of Nelson York, Charlestown, Middlesex, Massachusetts, United States; citing family 1877, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"Massachusetts State Census, 1855," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MQWT-97N : accessed 22 May 2016), May A Potter in household of Nelson York, Ward 02, Charlestown, Middlesex, Massachusetts, United States; State Archives, Boston; FHL microfilm 953,949.
"Massachusetts State Census, 1865," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MQCX-FY5 : accessed 22 May 2016), Mary A Putt in household of Samuel Potter, Charlestown, Ward 02, Middlesex, Massachusetts; State Archives, Boston; FHL microfilm 954,568.
"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MD3Y-7BX : accessed 22 May 2016), Mary A Potter in household of Nelson York, Massachusetts, United States; citing p. 205, family 1657, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,147.
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