United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M37Z-JRN : accessed 16 July 2020), Margaret Quinn in household of John Quinn, Philadelphia city Ward 7, Philadelphia, Pennsylvania, United States; citing enumeration district (ED) 118, sheet 5B, family 49, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,454.