"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSFC-HLZ : accessed 14 April 2017), John Boyle in household of John H Boyle, Borough of Brooklyn, Election District 7 New York City Ward 5, Kings, New York, United States; citing enumeration district (ED) 47, sheet 12A, family 270, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,044.
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