"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MGDZ-Q2B : accessed 15 August 2017), Margaret D Swartley in household of John C Swartley, Doylestown Ward 1, Bucks, Pennsylvania, United States; citing enumeration district (ED) ED 16, sheet 9A, family 186, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1319; FHL microfilm 1,375,332.
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