"United States Census, 1840," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHTY-K5M : 8 September 2017), Elizabeth Nace, Halifax Township, Dauphin, Pennsylvania, United States; citing p. 326, NARA microfilm publication M704, (Washington D.C.: National Archives and Records Administration, n.d.), roll 456; FHL microfilm 20,543.
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M4HH-VDK : 12 April 2016), Elizabeth Nace in household of Sherman Whitney, Halifax, Dauphin, Pennsylvania, United States; citing family 72, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).