"United States Census, 1860," index, FamilySearch (https://familysearch.org/ark:/61903/1:1:MC74-9SK : accessed 3 May 2015), Polly Swart in household of William W Swart, Davenport, Delaware, New York, United States; from "1860 U.S. Federal Census - Population," database, Fold3.com (http://www.fold3.com : n.d.); citing p. 4, household ID 771, NARA microfilm publication M653 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 803,743.