"United States Census, 1880," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M66R-WK8 : accessed 27 May 2015), Marria Schroer in household of Albert H Schroer, Jefferson City, Cole, Missouri, United States; citing enumeration district 46, sheet 59B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0682; FHL microfilm 1,254,682.