"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MW6L-CF6 : 16 July 2017), Kate Rolfe in household of H D Rolfe, Pittsburgh, Allegheny, Pennsylvania, United States; citing enumeration district ED 154, sheet 69B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 1094; FHL microfilm 1,255,094.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3MH-9BL : accessed 2 October 2017), Kate R Duncan in household of Charles E Duncan, Mifflin Township, Precinct 7 (excl. Homestead & Duquesne boroughs), Allegheny, Pennsylvania, United States; citing enumeration district (ED) 444, sheet 28B, family 528, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,369.
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