"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHMR-Q8T : accessed 7 September 2015), John Bieker in household of Francis Bieker, Jackson, Dubois, Indiana, United States; citing enumeration district 168, sheet 157D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0275; FHL microfilm 1,254,275.