"United States Census, 1880," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MW3H-99S : accessed 4 January 2015), Jan Dehaan, Holland, Ottawa, Michigan, United States, 244; citing sheet 473C, film number 0601, NARA microfilm publication T9, National Archives and Records Administration, Washington D.C.; FHL microfilm 1,254,601.
"United States Census, 1850," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MF8L-K8N : accessed 4 January 2015), J De Haan, Holland, Ottawa, Michigan, United States; citing family 202, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).