(Research):"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWFX-TMK : 15 July 2017), Esther E Sloan in entry for Mary Sloan, 1880; citing enumeration district ED 212, sheet 81B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d), roll 1133; FHL microfilm 1,255,133.