"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLNZ-237 : accessed 27 January 2019), John A Unverferth in household of Mrs. Anna Hanken, Ottawa, Putnam, Ohio, United States; citing enumeration district (ED) ED 77, sheet 9A, family 199, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 1226; FHL microfilm 1,375,239.
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