"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MKTL-9FH : accessed 18 January 2018), Mary E Haggerty in household of John J Haggerty, Newark Ward 7, Essex, New Jersey, United States; citing enumeration district (ED) ED 57, sheet 11A, family 171, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 878; FHL microfilm 1,374,891.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M45R-FCT : accessed 18 January 2018), Mary Haggerty, Newark Ward 6, Essex, New Jersey, United States; citing ED 154, sheet 8B, line 65, family 176, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1033; FHL microfilm 1,821,033.
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