"United States Census, 1840," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHTV-X5Z : accessed 20 November 2015), Jno Hart, Washington, Washington, Pennsylvania, United States; citing p. 7, NARA microfilm publication M704, (Washington D.C.: National Archives and Records Administration, n.d.), roll 499; FHL microfilm 20,560.
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M4ZW-DGB : accessed 20 November 2015), Robert Hart in household of John Hart, Washington, Washington, Pennsylvania, United States; citing family 274, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
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