"United States Census, 1840," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHYG-2JQ : 24 August 2015), Isaac Z Whitaker, Western Division, Grant, Wisconsin Territory, United States; citing p. 44, NARA microfilm publication M704, (Washington D.C.: National Archives and Records Administration, n.d.), roll 580; FHL microfilm 34,498.
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