"United States Census, 1880," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MWSK-933 : accessed 20 March 2015), Susan Poelstra, Grand Rapids, Kent, Michigan, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll ; FHL microfilm .