"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MN7Y-ZGL : 14 July 2016), Sarah Black in household of William Black, Osage, Benton, Arkansas, United States; citing enumeration district ED 15, sheet 482B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0039; FHL microfilm 1,254,039.