"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8YN-2YM : 14 July 2016), Richard Kent in household of Samuel Kent, Center, Madison, Nebraska, United States; citing enumeration district ED 101, sheet 489D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0752; FHL microfilm 1,254,752.