"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8S4-NGS : 12 August 2017), Randall A Adams in household of Littleton Adams, Madison, Muskingum, Ohio, United States; citing enumeration district ED 163, sheet 177A, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,255,054.